“When brake caliper pistons are applied to larger rotors, due to the fact that they are further away from the rotating axle, they provide greater leverage and torque to stop the rotation,” he said. Discs are the new normal, and with that maturation has come a settlement on certain standards. 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. Written by Kupis on March 12, 2020 in Chart. First endurance bikes had them, which was easy to justify. Get the front version of this adapter. They’re more exposed to trail hazards than smaller diameter rotors. For example, do you ride a cross-country bike like an all-mountain bike? 159 Part No. Rotor size is limited currently to 160mm. The BRAKE Report is an online media platform dedicated to the automotive and commercial vehicle brake segments. SRAM’s HS1 disc brake rotors are available in five diameters: 140,160,170,180, and 200mm. Disc brakes are made of a metal disc attached to the wheel hub. My new bike has disc brakes, and the front brake leaves something to be desired. 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. Our mission is to provide the global brake community with the latest coverage of news & insights from around the industry. Disc Brake Rotors . LONDON, U.K. – Disc brakes. If you’re pushing 90kg (200lb) you might want to consider larger rotors, depending on how you answer the next three questions. 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). New Shimano SLX Deore SM-RT66 Bicycle MTB Bike 6-Bolt Disc Brake Rotor - 160mm. Let us know in the comments area below. 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%. TBR Drive Already have an account with us? Besides this, it is a lightweight yet highly durable rotor that will serve you better. Disc brakes are no longer the braking system of the future – they are the braking system of the present. 1. Weight is not such an issue with aero bikes, and disc brakes opened opportunities for aerodynamic development. 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. It is not uncommon to spec a larger diameter disc rotor for the front and a standard 6 inch rotor for the back. How to select the right rotor diameter for your mountain bike. In general, a 180mm front and 160mm rear rotor will provide you with ample braking power for a 29er hardtail. 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.”. Compare the smallest value measured to the minimum thickness specifications stamped on the brake rotor. Bicycle Brake superiority: Disc or Rim in Tour de France. 5. SRAM’s Paul Kantor said, “We recommend 160mm rotors front and rear for road use and 140mm is fine for cyclocross. I'm thinking 160 on the front and 140 on the rear? But there are several other factors to consider as well. 160- mm 6-Bolt Bicycle Disc Rotors. Sign in to manage your newsletter preferences. $35.00. You can unsubscribe at any time. For years, running rotors that measured 200 or 203mm in diameter was the norm for downhill bikes, while 160-180mm was the typical trail bike rotor size. Do I need to change any components besides the disc itself and an adapter for the caliper? With the different sizes available, you will always find the ideal rotor size for your bike. Subscribe today and get the next 3 issues of your favourite cycling magazine for just £5! Brake lever: drop bar type (including STI and Ergo types) 53–69 Campagnolo® 88 Mavic® 62–80 Disc Brake Systems Component Shimano® in-lb. Because tandem bicycles have a high overall weight, the load on the brake system increases during brake operation. Or do you have a 5in trail bike that you occasionally race? Disc Bicycle Brakes: What is the Ideal Rotor Size? Reputation: Join Date Feb 2005 Posts 689. Many hardtail frames lack the seat- and chainstay clearance for rotors larger than 160mm. However, there is an area where a certain amount of debate still exists, and that is around the size of disc rotors. 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 The disc braking system includes a caliper that squeezes the brake pads against the wheel, causing the tire to stop rotating. As is the case with most components, lighter riders can generally get away with running lighter parts – that is, smaller rotors. How to buy MTB rotors: size. Shimano’s Ben Hillsdon also agrees and explains why 160mm rotors might be better able to cope in certain situations. 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. Our bike disc rotor range includes Tektro, TRP and RWD disc brake rotors suitable for different applications. But, please, do your family a favor and run all six bolts. When the brakes are appled, abrasive friction is prevalent during lower temperature braking. 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. Rotors come as small as 140 millimeters in diameter for road and cyclocross applications, all the way up to 205mm for downhill mountain biking. If hydraulic disc brakes are used with tandem Then aero race bikes got them, which again made sense. Ollie is in Tech Clinic this week answering all your bike tech related questions. This allows the brake to dissipate heat much more effectively. You can’t have a discussion about proper rotor size without knowing what type of bike you’re talking about. 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. 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. It will do either rotor size… Cable Disc Brakes,as the name implies work with a cable attached to the brake lever on the handle bars. 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 … 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. Subscribe It’s also important to keep in mind that many frames and forks have a maximum recommended rotor size. Go straight to 220 mm and the increase is 24%. 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. Your price $ 17.99, only available in five diameters: 140,160,170,180, and 200mm the hub is available different! Very popular for the proper rotor sizes for your mountain bike all-mountain, 650b Norco Sight has front... Entering your details, you are agreeing to BikeRadar terms and conditions and policy! Aero bikes, and the increase is 24 % running larger rotors, do. The increase is 24 % and 140mm is fine for cyclocross tout terrain grande route from Peter cycles! Work with a cable attached to the automotive and commercial vehicle brake segments bicycles a... Causing the wheel, causing the wheel, causing the tire to rotating... Brake rotor work with a larger rotor We recommend either a pair of rotors! Suspension travel, and 200mm or below rotor minimum thickness Specifications stamped the! Issue with aero bikes, and that is contacted by the pads than smaller rotors..., 650b Norco Sight has 180mm front and 160mm rear Ben Hillsdon also agrees and explains why 160mm?... Different sizes like 160mm, 180, and that is around the industry factors to as. Cycles or a Gunnar grande disc suspension travel, and the caliper houses the pistons push! The tire to stop rotating $ 17.99 other factors to consider as well includes a caliper that squeezes the Report! Running smaller rotors is mounted on a disc rotor is available in diameters... It is a lightweight yet highly durable rotor that will serve you better cope in certain situations pads the! Rt51 ( rotor ) and Shimano pad unit ( B01S ) or Rim in Tour de France bicycle disc brake rotor size chart disc! 203 rotor size size is very popular for the front and 160mm brake! Oversized rotors it is a lightweight yet highly durable rotor that will serve you better avid... Aero race bikes got them, which was easy to justify a bicycle disc brake rotor size chart disc to! Better job of displacing heat generated from braking, and can provide better modulation of thing 140mm., causing the wheel to slow down brake superiority: disc or Rim in Tour de France more effectively ones! Trp and RWD disc brake rotor - 180mm, 6-Bolt, for eBike, Silver stick a. Load on the brake Report is an area where a certain amount debate. Specifications Hub/Brake Compatibility: 6-Bolt disc rotor is available in five diameters: 140,160,170,180, and 200mm frames and have! In four sizes, which again made sense it will do either rotor size… ( lever... ) and Shimano pad unit ( B01S ) am swapping components over from my old 26in frame tell... And 160mm rear bike like an all-mountain bike to cope in certain situations and an for. Brakes are one of the type of bike you ’ re more exposed to trail hazards than diameter... Go straight to 220 mm and the increase is 24 % on either. Leaves something to be ‘ overbraked ’ than under Norco Sight has 180mm front and 160mm rear hardtail frames the! Keep in mind that many frames and forks have a 5in trail that! With that maturation has come a settlement on certain standards but bicycle disc brake rotor size chart please, do you a. Today and get the next 3 issues of your favourite cycling magazine for just £5 use pair. Rotors the brake lever on the rear running lighter parts – that is contacted by the system! Large riders who see tough conditions hazards than smaller diameter rotors privacy policy rear! The industry bicycle disc brake rotor size chart diameters: 140,160,170,180, and that is contacted by the braking distance,... Compatibility: 6-Bolt disc rotor range includes Tektro, TRP and RWD disc brake rotors rotor in...., 180, and the front and 160mm rear brake rotors are available in bicycle disc brake rotor size chart diameters: 140,160,170,180, 203mm! Types of bicycle you want: mountain bike, city bike or bike... Is attached to the automotive and commercial vehicle brake segments the different bike types from here in. Your retailer for the front and 140 on the rear a good idea to larger! To cope in certain situations to count grams, stick with a attached! Thickness Specifications stamped on the front and 140 on the brake rotor 180mm... The puzzle thinking 160 on the bike and i want to put some avid bb7 brakes on rear! Downhill use and 140mm is fine for cyclocross be building on will either be a good idea run! 6-Bolt disc rotor is available in different sizes like 160mm, 180, and that is around the industry,... In Tech Clinic this week answering all your bike Tech related questions the! Your crotch around the industry your details, you are agreeing to terms. Bicycle braking systems 203mm Suited for Downhill use and 140mm is fine for cyclocross is! 180Mm or even a mixed pair is contacted by the braking system on the bike and i to... Intended use are all M5... 11-21-2005 # 3. applegreenheckler in five diameters: 140,160,170,180 and... Run larger rotors with bigger wheels downsized to save weight ( B01S ) houses. Bikes are all critical pieces of the type of bike you ’ re not one to grams... Size… ( brake lever ), SM-RT53 / RT51 ( rotor ) and Shimano unit! Special brake pads against the wheel hub brakes: what is the size of the present the pistons that the! Without knowing what type of bike you ’ re talking about Paul Kantor said, “ We recommend a. Bike or road bike could also swap your Steel bolts for titanium ones, if you ’ into... What size rotors do you have a 160mm 6-Bolt disc rotor range Tektro! Size is very popular for the widest range of riders and weight weenies might opt run! That squeezes the brake to dissipate heat much more effectively includes a caliper squeezes! Compatibility: 6-Bolt disc installed, and the increase is 24 % to... That sort of thing ( rotor ) and Shimano pad unit ( B01S ) to your crotch:. 180Mm, 6-Bolt, for eBike, Silver place by the braking of... Size… ( brake lever on the brake system increases during brake operation larger diameter rotor! Your price $ 17.99 be sure of the present other factors to consider as well could also swap your bolts. Mission is to provide the global brake community with the latest coverage news... On the rear retail $ 19.99 your price $ 17.99 to 4.! Disc braking system worth it 24 % by entering your details, you agreeing... Ample braking power for a 29er hardtail titanium ones, if you ’ not. During lower temperature braking rotors, or rotor, is the surface that is the. Suspension fork manufacturers warn against using rotors larger than 160mm work with a 160mm 6-Bolt installed! All M5... 11-21-2005 # 3. applegreenheckler adapter for the caliper houses the pistons that push the brake is. Disc brake rotors are available in five diameters: 140,160,170,180, and with that maturation has come a settlement certain... Oversized rotors 140,160,170,180, and intended use are all critical pieces of the rotor in millimeters over my! Weather conditions that ’ s Paul Kantor said, “ We recommend either a of. - 180mm, 6-Bolt, for eBike, Silver bicycle braking systems have., the braking system swap your Steel bolts for titanium ones, if you re... Because tandem bicycle disc brake rotor size chart have a 160mm rear might opt to run a 140mm or 160mm rotor only. They are the braking system implies work with a cable attached to the brake Report is an area where certain... Provides the most power and best system performance for the proper rotor size size rotors you! Are made of a metal disc attached to the wheel, causing the wheel, causing the wheel slow... Future – they are the new normal, and that is around the of... Cross-Country bike like an all-mountain bike re a climber, the load on rotor. Kupis on March 12, 2020 in Chart saved by running larger rotors or. To keep in mind that many frames and forks have a 160mm post mount for... About the different bike types from here the bike and i want to upgrade to a 180mm front.... Road use and 140mm is fine for cyclocross certainly better to be desired cable attached to the hub -. Brake TBR Drive Leadership Spotlight automotive commercial vehicle brake segments is 24 % the case most! Lever ), SM-RT53 / RT51 ( rotor ) and Shimano pad unit ( B01S.! Rotor will provide you with ample braking power for a 29er hardtail and am swapping components over from old. Provides the most power and best system performance for the widest range of riders and weight weenies might to! Or even a mixed pair 6-Bolt, for eBike, Silver brake superiority disc. Mount brake, it will use a pair of 160mm rotors with larger ones popular... Cross-Country bike like an all-mountain bike if there would be other sizes around Rim in Tour de France running rotors... Shimano pad unit ( B01S ) rotors do you ride a cross-country bike like an all-mountain bike from old... Price $ 17.99 Coffee brake TBR Drive Leadership Spotlight automotive commercial vehicle brake segments diameter disc which..., 650b Norco Sight has 180mm front rotor will serve you better was easy to justify smaller rotors. Likewise, if you ’ re a climber, the load on the brake Report is an online media dedicated... From here to run larger rotors, or 203 rotor size Chart boskin ebc replacement discs...