Brake Rotor Size Chart Hoskin. Disc brakes are one of the main types of bicycle braking systems. 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. 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. Let us know in the comments area below. 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. Bike disc brake rotors with Upgrade Bikes. Larger wheels benefit from larger rotors, as do mountain bikes designed for aggressive riding. It is not uncommon to spec a larger diameter disc rotor for the front and a standard 6 inch rotor for the back. I'm thinking 160 on the front and 140 on the rear? 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. New Shimano SLX Deore SM-RT66 Bicycle MTB Bike 6-Bolt Disc Brake Rotor - 160mm. If your trails lack extended descents and have only minor changes in elevation then step away from the 200mm pie plate and opt for a smaller, lighter rotor. If so, how large should I go? Bicycle Brake superiority: Disc or Rim in Tour de France. You could also swap your steel bolts for titanium ones, if you’re into that sort of thing. Already have an account with us? 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). Our bike disc rotor range includes Tektro, TRP and RWD disc brake rotors suitable for different applications. 5. With the different sizes available, you will always find the ideal rotor size for your bike. 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. 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. The disc braking system includes a caliper that squeezes the brake pads against the wheel, causing the tire to stop rotating. Disc rotor size chart boskin ebc replacement mtb discs mountain bike forums mtbr never tell you about disc brakes. Disc Brake Rotors . 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. 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. But, please, do your family a favor and run all six bolts. 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. Or do you have a 5in trail bike that you occasionally race? As the rotor reaches its minimum thickness, the braking distance increases, sometimes up to 4 meters. Sign in to manage your newsletter preferences. 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. Gram counting is not just for the XC crowd, though – many DH racers opt to run 180mm, and sometimes 160mm, rear 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. Many hardtail frames lack the seat- and chainstay clearance for rotors larger than 160mm. The frame I will be building on Will either be a tout terrain grande route from Peter white cycles or a Gunnar grande disc. Coffee Brake I would say M5 but would not be suprised if there would be other sizes around. Commercial Vehicle. thanks, Chris As is the case with most components, lighter riders can generally get away with running lighter parts – that is, smaller rotors. If so what size? How to buy MTB rotors: size. Last but not least, if you endure the climbs to enjoy the descents you might benefit from larger rotors to keep your speed in check when you’re hanging it all out. 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. Should I replace my 160mm rotors with larger ones? I want to upgrade to a 180mm front rotor. By entering your details, you are agreeing to BikeRadar terms and conditions and privacy policy. Brake lever: drop bar type (including STI and Ergo types) 53–69 Campagnolo® 88 Mavic® 62–80 Disc Brake Systems Component Shimano® in-lb. What do you think? ... Aztec Stainless Steel Disc Rotors Item Specifications Hub/Brake Compatibility: 6-Bolt Disc Rotor Size: 160mm … read more. They do a better job of displacing heat generated from braking, and can provide better modulation. Leadership Spotlight Disc brakes are no longer the braking system of the future – they are the braking system of the present. 10% off retail $19.99 your price $17.99. Are disc brake rotor bolts a standard size? Measure the brake rotor thickness 0.40 inches (10mm) inside the outer circumference of the brake rotor every 45° ( 1 / 8 of a rotation). Shimano’s Ben Hillsdon also agrees and explains why 160mm rotors might be better able to cope in certain situations. :: 203mm Suited for Downhill use and large riders who see tough conditions. “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. Thanks! It’s certainly better to be ‘overbraked’ than under. This disc rotor is available in different sizes like 160mm, 180, and 203mm. Disc brakes are made of a metal disc attached to the wheel hub. $29.99. Why not 140mm, 180mm or even a mixed pair? You can’t have a discussion about proper rotor size without knowing what type of bike you’re talking about. 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%. Get the front version of this adapter. 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. The entire post can be viewed by clicking HERE. How to select the right rotor diameter for your mountain bike. However, there is an area where a certain amount of debate still exists, and that is around the size of disc rotors. SRAM’s Paul Kantor said, “We recommend 160mm rotors front and rear for road use and 140mm is fine for cyclocross. • If the front brake is applied too strongly, the wheel may lock and the bicycle may fall forward, and serious injury may result. The difference in weight depends heavily on the rotor itself. 140, 160, 170, 180, 200, or 203 Rotor Size (mm) +5 mm Inline tabs Subscribe Compare the smallest value measured to the minimum thickness specifications stamped on the brake rotor. 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. “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. 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. 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. 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 … This is the business end of the braking system. Question: I’m building up a 29er hardtail and am swapping components over from my old 26in frame. TBR Drive This size is very popular for the front disc paired with a 160mm rear. $35.00. Go straight to 220 mm and the increase is 24%. The BRAKE Report is an online media platform dedicated to the automotive and commercial vehicle brake segments. This is the size of the rotor in millimeters. If you have a front flat mount brake, it will use a 140mm or 160mm rotor, only. The BRAKE Report is an online media platform dedicated to the automotive and commercial vehicle brake segments. 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 … Have you found better braking performance by running larger rotors, or have you downsized to save weight? But there are several other factors to consider as well. Their more consistent performance was a natural fit on rough roads in often changeable weather conditions. They’re more exposed to trail hazards than smaller diameter rotors. Lighter riders and weight weenies might opt to run a 140mm rear rotor for XC racing. Bicycle Disc Brake Rotor Size Chart. FEATURES EXPLAINED CALIPER. It’s also important to keep in mind that many frames and forks have a maximum recommended rotor size. Should all disc bikes use a pair of 160mm rotors? The disc rotor size is 160mm as engraved on the rotor (160mm is a common size rotor). 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. This is due … Because tandem bicycles have a high overall weight, the load on the brake system increases during brake operation. When the brakes are appled, abrasive friction is prevalent during lower temperature braking. You can unsubscribe at any time. 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 all-mountain, 650b Norco Sight has 180mm front and 160mm rear brake rotors. Rotor size is limited currently to 160mm. For example, do you ride a cross-country bike like an all-mountain bike? Wheel size, suspension travel, and intended use are all critical pieces of the puzzle. Related post:Bicycle Brake superiority: Disc or Rim in Tour de France. 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 Consult your retailer for the proper rotor sizes for your bicycle. Weight is not such an issue with aero bikes, and disc brakes opened opportunities for aerodynamic development. 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. Likewise, if you’re a climber, the additional grams saved by running smaller rotors might be worth it. 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. Automotive Magura MDR-C Disc Brake Rotor - 180mm, 6-Bolt, For eBike, Silver. 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. Method Two: Calculating the bike size: Take off your shoes and stand with your legs about 15-20 cm(6” – 8”) apart. If the rotor is below the minimum thickness, the rotor … Yet now even lightweight race bikes have them. Anyway the ones that are on my bikes are all M5... 11-21-2005 #3. applegreenheckler. Touring rigs suspension travel, and the increase is 24 % very popular for the widest range riders! 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