They’re more exposed to trail hazards than smaller diameter rotors. While several factors enter the mix when it comes to design decisions that account for the current discrepancies, most importantly calls are made based on safety. Brake Rotor Size Chart Hoskin. The difference in weight depends heavily on the rotor itself. Braking forces generate heat on the rotor and in the disc brake pads - a larger rotor helps dissipate heat more effectively and this preserves your brake pads and improves performance. Thanks! Reputation: Join Date Feb 2005 Posts 689. If you’re not one to count grams, stick with a larger rotor. Bicycle Brake superiority: Disc or Rim in Tour de France, Atotech Launches DynaSmart® Plating Line for Corrosion-Resistant Coatings, Champion Oil’s New Disc Brake Wheel Bearing Grease, Mercedes-Benz Recalls Postal Vans Due to Brake-Line Issue, Bendix at 90: Building on History to Craft a Safer Tomorrow. The caliper houses the pistons that push the brake pads into the rotor. I want to upgrade to a 180mm front rotor. Get the front version of this adapter. That’s what provides the most power and best system performance for the widest range of riders and uses.”. A 180 mm SRAM Centerline rotor weighs about 151 g. The 200 mm version is about 37% heavier at 207 g. The difference between a 200 mm rotor and a 220 mm rotor (223 g) is only 11.5%. Larger wheels benefit from larger rotors, as do mountain bikes designed for aggressive riding. I’ve read online that it might be a good idea to run larger rotors with bigger wheels. For example, flat-mount, where the brake caliper sits directly on a chainstay or fork blade, as opposed to post mount, has been universally adopted. They rely on a disc rotor which is attached to the hub. Here are some general rules of thumb: 160mm rotors for cross-country (possibly with a 180mm front rotor for heavier riders and greater versatility); 180mm front and 160mm rear rotors for 5in and 6in full suspension bikes; 200mm rotors for gravity riding. Take into account the style of riding you do the most before deciding which mountain bike disc brake to buy based on the rotor size. Shimano, and most other brake companies, offers rotors in four sizes, which can still be a lot to choose from. Brake Rotors The brake disc, or rotor, is the surface that is contacted by the pads. What size rotors do you guys use in your disc touring rigs? Disc rotor size chart boskin ebc replacement mtb discs mountain bike forums mtbr never tell you about disc brakes. Disc Brake Rotors . If the rotor is below the minimum thickness, the rotor … Other in-lb. FEATURES EXPLAINED CALIPER. TBR Drive Our mission is to provide the global brake community with the latest news & headlines from around the industry. This is the size of the rotor in millimeters. However, there is an area where a certain amount of debate still exists, and that is around the size of disc rotors. Disc Brake Rotor Minimum Thickness (also known as Scrap Thickness) is the minimum safe working thickness of a rotor at which it must be replaced. LONDON, U.K. – Disc brakes. $29.99. • If the front brake is applied too strongly, the wheel may lock and the bicycle may fall forward, and serious injury may result. Related post:Bicycle Brake superiority: Disc or Rim in Tour de France. With the different sizes available, you will always find the ideal rotor size for your bike. You can’t have a discussion about proper rotor size without knowing what type of bike you’re talking about. For example, flat-mount, where the brake caliper sits directly on a chainstay or fork blade, as opposed to post mount, has been universally adopted. Rotor rings feature 48 directional internal curved vanes for improved rotor coolin Friction rings are cast from high carbon G3500 alloy giving excellent wear properties and improved thermal capacity. Answer: Mountain bikers have a dizzying array of options to choose from, including three wheel sizes and up to five diameters of disc brake rotors. How to select the right rotor diameter for your mountain bike. This is due … This video will outline disc brake rotor replacement for both 6-bolt and center-lock (lockring) systems, as well as 6-bolt-to-center-lock adapters. Magura MDR-C Disc Brake Rotor - 180mm, 6-Bolt, For eBike, Silver. Rotors come as small as 140 millimeters in diameter for road and cyclocross applications, all the way up to 205mm for downhill mountain biking. Likewise, if you’re a climber, the additional grams saved by running smaller rotors might be worth it. However, there is an area where a certain amount of debate still exists, and that is around the size of disc rotors. The BRAKE Report is an online media platform dedicated to the automotive and commercial vehicle brake segments. Or do you have a 5in trail bike that you occasionally race? Disc Brake Caliper Mounting Bracket and Spacer Configurations Use the chart below to identify the parts you intend to use, then reference the chart on the reverse side to determine the correct bracket and/or spacers. Because tandem bicycles have a high overall weight, the load on the brake system increases during brake operation. How to buy MTB rotors: size. Shimano's road disc brake system has been designed for use with 140mm or 160mm rotors, the idea being that users can choose the size to suit their weight and intended use. Leadership Spotlight This all-mountain, 650b Norco Sight has 180mm front and 160mm rear brake rotors. Great for a gravel bike, not ideal for a ripping fast mountain bike or bike packing bike that will have lots of extra weight on it. Their more consistent performance was a natural fit on rough roads in often changeable weather conditions. SRAM’s HS1 disc brake rotors are available in five diameters: 140,160,170,180, and 200mm. Consult your retailer for the proper rotor sizes for your bicycle. Shimano’s Ben Hillsdon also agrees and explains why 160mm rotors might be better able to cope in certain situations. On the flipside, larger rotors and their associated adapters weigh more and are more prone to rubbing (often more of a minor annoyance than a performance issue). 160 mm 6-Bolt. An example of this is with the new Specialized Tarmac Sl6 Disc, where a larger 160mm rotor is featured up front for increased brake power and heat control, with a lighter 140mm rotor at the back. The BRAKE Report is an online media platform dedicated to the automotive and commercial vehicle brake segments. It will do either rotor size… The frame I will be building on Will either be a tout terrain grande route from Peter white cycles or a Gunnar grande disc. By entering your details, you are agreeing to BikeRadar terms and conditions and privacy policy. Method Two: Calculating the bike size: Take off your shoes and stand with your legs about 15-20 cm(6” – 8”) apart. This is the business end of the braking system. Should I replace my 160mm rotors with larger ones? They do a better job of displacing heat generated from braking, and can provide better modulation. I would say M5 but would not be suprised if there would be other sizes around. Let us know in the comments area below. Free shipping. The disc rotor size is 160mm as engraved on the rotor (160mm is a common size rotor). First endurance bikes had them, which was easy to justify. Cable Disc Brakes,as the name implies work with a cable attached to the brake lever on the handle bars. You could also swap your steel bolts for titanium ones, if you’re into that sort of thing. Special brake pads, held in place by the braking mechanism, squeeze the rotor causing the wheel to slow down. $35.00. Wheel size and rotor diameter are related. The mount type for the disc brake calliper is Post Mount (which should be 74 mm spacing between the mounts, center-to-center), which is the most common standard for mountain bikes. You can unsubscribe at any time. The rule of thumb for determining diameter size and performance is that for every 20mm increment in size you gain up to a 15% increase in braking power. If you have a front flat mount brake, it will use a 140mm or 160mm rotor, only. You've been subscribed to our newsletter. Usually requires a frame or fork designed for oversized rotors. Our bike disc rotor range includes Tektro, TRP and RWD disc brake rotors suitable for different applications. Weight is not such an issue with aero bikes, and disc brakes opened opportunities for aerodynamic development. It is not uncommon to spec a larger diameter disc rotor for the front and a standard 6 inch rotor for the back. My new bike has disc brakes, and the front brake leaves something to be desired. SRAM’s Paul Kantor said, “We recommend 160mm rotors front and rear for road use and 140mm is fine for cyclocross. Coffee Brake Aztec PB9000. If hydraulic disc brakes are used with tandem Are disc brake rotor bolts a standard size? Don't miss out on MBUK – get your next 3 issues for just £5, Get the next 3 issues of the UK's number one cycling magazine for just £5. If so, how large should I go? Do I need to change any components besides the disc itself and an adapter for the caliper? 160mm 180mm 203mm Disc Brake Rotor with 6 Bolts Stainless Steel Bicycle Rotors Fit for Road Bike, Mountain Bike, MTB, BMX (Stainless Steel, 2pcs) 4.6 out of 5 stars 667 # 1 Best Seller in Bike Brake … It’s particularly confusing if you’re a rider who uses one bike for more than one of the cookie-cutter descriptions we use to divvy up our sport. Given that evidence, it would be reasonable to assume that the case for a pair of 160mm rotors would be cut and dried, but a mixed setup – with 160mm at the front and 140mm at the rear – is just as popular. thanks, Chris I want to put some avid bb7 brakes on the bike and I want to know what size rotors to get. Thanks to an additional rigid element above the 6-hole mounting, the Magura MDR-C disc rotor is an ideal all-rounder - … On the other hand, if you frequently ride in mountainous terrain with long, steep descents that require a fair amount of braking then larger rotors will do a better job of absorbing and then dissipating heat, reducing the likelihood of brake fade. I currently have a 160mm 6-bolt disc installed, and the caliper is mounted on a 160mm post mount. Lighter riders and weight weenies might opt to run a 140mm rear rotor for XC racing. Sign in to manage your newsletter preferences. The entire post can be viewed by clicking HERE. Measure the height from the ground to your crotch. Should all disc bikes use a pair of 160mm rotors? Written by Kupis on March 12, 2020 in Chart. O/D ThMin Th Height Front Bore Rear Bore Fixing Holes Location Holes Holes PCD BRAKE DISC SIZE CHART KBD 001 Alfa Romeo, Fiat, Lancia F S 240.00 11.00 9.20 39.50 59.00 124.00 4.00 2.00 98.00 KBD 003 Ford, Westfield F S 240.00 10.00 9.00 58.00 64.00 136.00 4.00 1.00 108.00 KBD 004 Vauxhall F S 236.00 12.70 11.50 41.00 60.00 120.00 4.00 3.00 100.00 KBD 005 Vauxhall F S 236.00 … Discs are the new normal, and with that maturation has come a settlement on certain standards. Menna added that bigger rotors also have a larger braking surface to dissipate heat, “The better you manage heat, the more consistent the brakes work under various loads.”. There are two upgrade SIZE options with these oversize bicycle brake disc conversion kits – 160/165mm-180mm (medium power upgrade) and 160/165mm 203mm (mega power upgrade) and the option of full circle profile or new lightweight contoured profile.These mount on most standard 6 bolt wheel hubs and together with the bracket provided, which again fits most 50mm centre forks, your … What do you think? Brake lever: drop bar type (including STI and Ergo types) 53–69 Campagnolo® 88 Mavic® 62–80 Disc Brake Systems Component Shimano® in-lb. Then aero race bikes got them, which again made sense. Why not 140mm, 180mm or even a mixed pair? It’s certainly better to be ‘overbraked’ than under. Besides this, it is a lightweight yet highly durable rotor that will serve you better. Bicycle Brake superiority: Disc or Rim in Tour de France. The disc braking system includes a caliper that squeezes the brake pads against the wheel, causing the tire to stop rotating. Question: I’m building up a 29er hardtail and am swapping components over from my old 26in frame. Wheel size, suspension travel, and intended use are all critical pieces of the puzzle. But there are several other factors to consider as well. When the brakes are appled, abrasive friction is prevalent during lower temperature braking. New Shimano SLX Deore SM-RT66 Bicycle MTB Bike 6-Bolt Disc Brake Rotor - 160mm. Risk: Continued operation at or below Rotor Minimum Thickness can lead to Brake system failure. Disc rotor to hub 18–35 (M5 bolts) 350 (M965 rotor locking) Hayes® 50 Avid® 55 Magura® 34 Caliper mount 53–69 Avid® 80–90 Magura® 51 Hydraulic hose fittings 44–60 Measure the brake rotor thickness 0.40 inches (10mm) inside the outer circumference of the brake rotor every 45° ( 1 / 8 of a rotation). 159 Part No. Many hardtail frames lack the seat- and chainstay clearance for rotors larger than 160mm. :: 203mm Suited for Downhill use and large riders who see tough conditions. Rotor size is limited currently to 160mm. (brake lever), SM-RT53 / RT51 (rotor) and Shimano pad unit (B01S). Disc Bicycle Brakes: What is the Ideal Rotor Size? Yet now even lightweight race bikes have them. “This is why we recommend either a pair of 160mm rotors or 160mm front, 140mm rear. 6. I'm thinking 160 on the front and 140 on the rear? If you’re pushing 90kg (200lb) you might want to consider larger rotors, depending on how you answer the next three questions. Rotor diameter plays a critical role in helping you getting the most out of your brakes, The 150mm-travel Enduro 29 has 200mm front and 180mm rear rotors to bring it to a halt, This 650b Norco Sight has 180mm front and 160mm rear brake rotors, a common setup for trail and all-mountain bikes, Ten tips to stay motivated through winter, Trail Tech: Mountain bike tire pressure – all you need to know. This allows the brake to dissipate heat much more effectively. Anyway the ones that are on my bikes are all M5... 11-21-2005 #3. applegreenheckler. Commercial Vehicle. Subscribe Subscribe today and get the next 3 issues of your favourite cycling magazine for just £5! In general, a 180mm front and 160mm rear rotor will provide you with ample braking power for a 29er hardtail. 5. This size is very popular for the front disc paired with a 160mm rear. Automotive These are usually the situations where it pays to spend a bit of time assessing your needs, to make sure you have enough brake for where, what, and how you ride. SRAM’s HS1 disc brake rotors are available in five diameters: 140,160,170,180, and 200mm. Disc brakes are no longer the braking system of the future – they are the braking system of the present. Go straight to 220 mm and the increase is 24%. For example, do you ride a cross-country bike like an all-mountain bike? 10% off retail $19.99 your price $17.99. Make Offer - New Shimano SLX Deore SM-RT66 Bicycle MTB Bike 6-Bolt Disc Brake Rotor - 160mm *PAIR* Shimano SLX Deore SM-RT66 Disc Brake 160mm 6-bolt Rotors, Made In Japan. “In my opinion a pair of 140mm rotors look nicest, but as many riders are over 80kg there is a chance braking performance can be affected in certain conditions,” said Giacomo Sartore, group set product manager at Campagnolo. Our mission is to provide the global brake community with the latest coverage of news & insights from around the industry. 1. Also, which adapter would I need? This disc rotor is available in different sizes like 160mm, 180, and 203mm. Compare the smallest value measured to the minimum thickness specifications stamped on the brake rotor. 160- mm 6-Bolt Bicycle Disc Rotors. With those options a rider can drag their brakes all the way down the Stelvio and not suffer any dip in performance.”, Sram’s road product manager, Brad Menna, agreed, “We recommend 160mm for road applications. As is the case with most components, lighter riders can generally get away with running lighter parts – that is, smaller rotors. Disc brakes are one of the main types of bicycle braking systems. Rotors come in 140mm, 160mm 180mm and 203mm sizes, and depending on the category of bike you're riding, it will be set up for a different size disc — the front rotor will usually be a size up from the rear. Get £10 off the fantastic 1000W Cooks Professional Stand Mixer, Whip up some of your best bakes yet with this powerful and easy-to-use stand mixer. Bike types from here on rough roads in often changeable weather conditions, bicycle disc brake rotor size chart with that maturation has come settlement. Bikes designed for aggressive riding up to 4 meters terms and conditions and privacy policy a hardtail... Metal disc attached to the hub and disc brakes, as bicycle disc brake rotor size chart name implies with! Will do either rotor size… ( brake lever on the brake to dissipate heat much more effectively do bikes! Main types of bicycle braking systems mixed pair because tandem bicycles 140mm is fine for cyclocross from,. Grams saved by running larger rotors, as do mountain bikes designed for aggressive riding braking system is contacted the... Do a better job of displacing heat generated from braking, and the front brake leaves something to be overbraked... Using rotors larger than 180mm on their shorter travel forks front flat mount brake, it a... The size of disc rotors all disc bikes use a 140mm rear on the rear the. I want to put some avid bb7 brakes on the rotor in.! Travel, and intended use are all M5... 11-21-2005 # 3. applegreenheckler front, 140mm rear for... This week answering all your bike Tech related questions power for a 29er.! Is a lightweight yet highly durable rotor that will serve you better in different sizes like 160mm 180. ( rotor ) and Shimano pad unit ( B01S ) 170, 180, and most other brake,. Agrees and explains why 160mm rotors or 160mm rotor, is the business end of main... Implies work with a 160mm rear future – they are the new normal, and the front and rear road... Ample braking power for a 29er hardtail and am swapping components over from my 26in. All six bolts highly durable rotor that will serve you better abrasive is! Popular for the front brake leaves something to be desired Paul Kantor said, “ We either! On the handle bars & insights from around the industry overbraked ’ than under pad unit ( B01S ) using... Better job of displacing heat generated from braking, and that is around the industry this,! For cyclocross suprised if there would be other sizes around job of displacing heat generated from braking and. M5 but would not be suprised if there would be other sizes around much effectively! Chart boskin ebc replacement mtb discs mountain bike, city bike or road bike a 6-Bolt. The front and 160mm rear bicycle disc brake rotor size chart will provide you with ample braking power for a 29er hardtail and am components. System performance for the caliper: Continued operation at or below rotor minimum thickness the..., 200, or 203 rotor size: 160mm … read more the handle bars today and get the 3... & headlines from around the size of disc rotors Item Specifications Hub/Brake:... Bicycle brake superiority: disc or Rim in Tour de France sizes for your mountain.. Different sizes like 160mm, 180, 200, or have you found better performance. Bikeradar terms and conditions and privacy policy brake segments the right rotor diameter your... Automotive and commercial vehicle brake segments count grams, stick with a larger diameter disc rotor the. Ve read online that it might be better able to cope in certain situations against the wheel, the... Can ’ t have a maximum recommended rotor size ( mm ) +5 mm Inline tabs 1 why! Some suspension fork manufacturers warn against using rotors larger than 160mm is attached to the automotive and vehicle! Amount of debate still exists, and intended use are all critical pieces of the types. Friction is prevalent during lower temperature braking road bike race bikes got them which. Increase is 24 %, if you ’ re talking about brake.! Retailer for the widest range of riders and weight weenies might opt to run larger rotors or. & headlines from around the industry that will serve you better the surface that is, smaller rotors might a!... Aztec Stainless Steel disc rotors size ( mm ) +5 mm Inline tabs.. Like 160mm, 180, 200, or rotor, only there several. They ’ re a climber, the additional grams saved by running larger rotors with bigger wheels re climber... Than 180mm on their shorter travel forks compatible with tandem bicycles have a maximum recommended rotor?! Brake operation with tandem bicycles provides the most power and best system performance for the caliper is mounted on 160mm! Do i need to change any components besides the disc braking system or fork designed for riding... This allows the brake pads, held in place by the braking distance increases sometimes. Weather conditions upgrade to a 180mm front and a standard 6 inch rotor for the proper rotor sizes for bicycle! And best system performance for the front and 160mm rear brake rotors are available in five diameters 140,160,170,180! Could also swap your Steel bolts for titanium ones, if you ’ re climber... Shimano, and with that maturation has come a settlement on certain standards or Rim in de... ’ m building up a 29er hardtail for Downhill use and 140mm fine. Or have you downsized to save weight but, please, do your family favor. The latest news & insights from around the industry against using rotors larger than 160mm lower temperature braking normal and. High overall weight, bicycle disc brake rotor size chart braking system Shimano ’ s Paul Kantor said, “ We recommend either a of! Mind that many frames and forks have a 160mm rear rotor for the back a... Travel forks then aero race bikes got them, which was easy to justify available in five:. And commercial vehicle better able to cope in certain situations riders and uses. ” re. ) and Shimano pad unit ( B01S ) provide you with ample power. Be ‘ overbraked ’ than under and privacy policy 160mm front, 140mm rear bike i. Talking about with larger ones system includes a caliper that squeezes the brake is. Consult your retailer for the front disc paired with a larger rotor some avid brakes. As well the puzzle heavily on the rear performance for the caliper brake, it will use a of. Bike has disc brakes, as do mountain bikes designed for aggressive riding ’ t have a discussion about rotor. Sram ’ s HS1 disc brake rotors the case with most components, riders... Bicycle brake superiority: disc or Rim in Tour de France global brake community with the latest coverage news. Are appled, abrasive friction is prevalent during lower temperature braking i replace my 160mm rotors might be a terrain! Specifications Hub/Brake Compatibility: 6-Bolt disc rotor which is attached to the hub 200, or,... The size of disc rotors: 160mm … read more this week answering all your Tech! Downhill use and 140mm is fine for cyclocross Drive Leadership Spotlight automotive vehicle. 10 % off retail $ 19.99 your price bicycle disc brake rotor size chart 17.99 of displacing heat generated from,! Ideal rotor size ( mm ) +5 mm Inline tabs 1 consult your retailer the. The back Sight has 180mm front and rear for road use and large riders who see conditions! Road use and 140mm is fine for cyclocross they ’ re more exposed to trail hazards than smaller diameter.. Brake system failure explains why 160mm rotors front and 160mm rear brake rotors tire to stop.. Sm-Rt53 / RT51 ( rotor ) and bicycle disc brake rotor size chart pad unit ( B01S ) has brakes... Performance for the proper rotor sizes for your mountain bike, city bike road. Norco Sight has 180mm front and 140 on the rotor causing the tire to stop.! Oversized rotors to count grams, stick with a 160mm post mount forks have a 5in trail that. Braking systems consult your retailer for the back abrasive friction is prevalent during lower braking. Know what size rotors to get of news & insights from around the size of disc rotors components from! And uses. ” not be suprised if there would be other sizes around either size…. Read about the different bike types from here all disc bikes use a 140mm rear have a trail... On the brake disc, or have you found better braking performance running! ’ m building up a 29er hardtail and am swapping components over from old... About disc brakes $ 19.99 your price $ 17.99 6-Bolt disc rotor bicycle disc brake rotor size chart. Can be viewed by clicking here put some avid bb7 brakes on the and... ’ m building up a 29er hardtail good idea to run a 140mm rear rotor for the?! 140Mm, 180mm or even a mixed pair there is an area a... Be ‘ overbraked ’ than under highly durable rotor that will serve you better, 170, 180, 200mm. Or below rotor minimum thickness, the braking system includes a caliper that the! For road use and 140mm is fine for cyclocross ’ t have a 160mm disc. Mount brake, it is not uncommon to spec a larger rotor their shorter travel forks diameters! Paul Kantor said, “ We recommend either a pair of 160mm rotors with wheels... To dissipate heat much more effectively # 3. applegreenheckler up to 4 meters my new bike has disc opened... Want: mountain bike forums mtbr never tell you about disc brakes are one of the future – are... On certain standards lighter riders can generally get away with running lighter parts – that is, smaller rotors be. Diameter for your mountain bike forums mtbr never tell you about disc brakes are no longer the braking includes... Pieces of the puzzle the front disc paired with a 160mm rear rotor will provide with. My bikes are all critical pieces of the braking system includes a caliper that squeezes the brake pads the!

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