Since only two rotor sizes will be used, the adapters to fit the flat-mount calipers are elegantly simple and only two in number total. So here’s a guide for readers to figure out flat-mount vs post-mount brakes. : - The INTERNATIONAL 2000 model is compatible with the 2000 Hayes, M gura and Shimano brakes discs. Mount adapter / Model No. Mountain bikes tend to use 180mm front, 160mm rear or for the big fast bikes, 200mm rotors. I.S., aka International Standard is for better or worse, the current brake mounting standard for bicycle frames. Some manufacturers have stated that the rim brake version of a particular bike is more aerodynamically efficient than the disc brake model, but it's not as simple as saying that rim brakes are always more aero. BR-M975/M975P Disc brake mount adapter application table Please note we have 4 kinds of Calipers and refer following chart for adapter combination. I show how to convert an old vintage MTB with no frame/fork disc brake mounts, to disc brakes using adapters. They add a place for bolts to get loose, additional weight, and additional places for failure. Brake manufacturers and bike companies could have easily adapted existing post-mount brake calipers for road bikes in a timely fashion, and indeed many did. 4.6 out of 5 stars 85. Nothing is going to happen, probably. Bigger rotors dissipate heat faster, so they work better under high loads. Sram 10mm, 20mm, 40mm, Shimano F203P/PM, F180P/P2, 74mm frame That’s pretty much only the case with Post Mount. Here’s the code for figuring out what size adapter you need: Click for Paul Component Adapters, or generic SRAM/Avid Adapters. It’s featured on the most bikes, and when most folks think: disc brake adapter, some sort of I.S. Are disc brake post mount adapters … CDHpower Disc Brake Rotor Adapter and 28T Sprocket for Gas Motorized Bicycle 48cc/66cc/80cc. It will do either rotor size. Adapters are used to suit larger rotors. This is already a common occurrence with custom frames using carbon forks. Bicycles that have disc brake mounts are designed to work with a certain minimum rotor size on the front and back and if you want to use larger rotors or use a disc brake caliper that isn't supported by the frame you have then you'll need to use a disc brake adapter. We're riding townies, adventure, and mountain bikes. Advantages. To fit a 160m rotor, a spacer fitted between caliper and stay boosts the caliper up 20mm, requiring longer bolts from the same holes underneath. Quest for the Right Road Disc Brake Adapters. Disc brakes rotors come in different diameters and in different mounting designs. Disc brake adapters are a black hole of weird standards. On the other hand I see models which seem to work for both. If it’s designed around 180 rotors, just direct mount the brake. Analog’s guide to choosing the right Disc Brake Adapter for your bike. All flex goes right into the body of the brake, which is already overbuilt to resist flex from the brake pistons. But why design a system with a built in stress riser? Not all disc brakes need adaptors: If a bike frame is designed for 160mm rotors and post mount brakes, and you stick to that size of rotor, no adaptor needed. This means that all of the stress generated by braking force is transferred to two M6 Bolts, which are threaded. Like any other external component, disc brakes affect aerodynamics. Huge selection of every disc brake adapter you can imagine. Disc brake rotors are strong and lightweight circular metal discs that attach to the front and rear wheels of your bike. Jim’s Tech Talk. With all the hype over the past three or four years, you would expect that disc brakes would have completely taken over the road bike market by now. Basically, it’s a spacer. I like post mount, because if a bike is designed right, you can run any post mount disc brake without any adapters. It’s an especially unfortunate situation for Shimano road calipers, since they don’t have a banjo-fitting for the hose at the caliper like SRAM. DESCRIPTION Y8LF98040 Caliper Fixing Bolt Unit (M6×36.3) for SM-MA90-F180P/P Y8JB98010 Caliper Fixing Bolt Unit (M6×38.6) for SM-MA90-F203P/PM Y8LF98050 Caliper Fixing Bolt Unit (M6×30.5) for SM-MA90-F180P/P Y8JB98020 Caliper Fixing Bolt Unit (M6×32.8) for SM-MA90-F203P/PM 3 Y8LF12000 R-Washer A In contrast, most of the carbon disc fork manufacturers seem to be switching to flat-mount as they roll out new product, though they seem slower to do so with CX-disc forks than with road disc. Disc brake rear caliper mount bracket adapter SM-MA-R140P/D - mount adapter for rear disc brake - from Flat Mount frame to Post Mount caliper - for 140mm rotor only Disc You could potentially fit rotors from 140mm to 203mm on a given dropout, which can perhaps be described asthe difference between a lightweight XC setup and one riggedfor downhill. Post Mount (PM) caliper, I.S. 3 Disc brakes affect aerodynamics. In general, they have two functions. No such adapters exist, and if I were you I wouldn’t hold my breath waiting for them to appear. The downside to I.S. It’s probably not geometrically possible. One way to keep the wheels in place is to use thru axles where the ends of the dropouts are closed and a removable pin goes completely through the axle to hold it in place. FREE Shipping on orders over $25 shipped by Amazon. I know you weren’t the one pushing for this new flat-mount standard, but you covered the bases well enough. The brake itself has threaded holes in the body, which is stronger from an engineering standpoint. With these adapters, you can mount your brake caliper the right way and adjust it to your preferred disc brake rotor size. A disc brake puts forces on a wheel that are different from those of a rim brake, so keeping that wheel in its correct position and avoiding flex in the axle and dropout become challenging. Exceeding that will potentially knacker your frame. When I go to a shop, I see that apparently there are versions labelled as front or rear specific. LATEST NEWS. Adapters are best avoided if you don’t need them. Uberbike Covid-19 Response The most common mounting design is called six bolt, which is where the rotor has six bolt holes in the middle is held on to the hub by six bolts (funny that). They explained that the adapters Ross had were both fronts. You need an adaptor to get the two to play together. Larger size rotors are accommodated by adapters that push the caliper out at angle away from the dropout. You will need one of these adapters to mount normal disc brakes, which by default are set up for ‘Post Mount’ style mounting. And there’s going to be a lot of people who have a fully built bike but are looking to either upgrade the frameset or the parts soon. Disc brake adapters mount between frame or fork and the brake calliper or the brake disc. to post mount adapter. If it was designed around a 180mm rotor and you want to run 200mm rotors, get the same 20mm post mount adapter. Two flanged M5 bolts hold the caliper in place by reaching all the way through the chainstay from underneath. The rear caliper mount might be on the back of the left seatstay or it could be atopchainstay inside the rear triangle. £11.99. To fall back; return. 99. I've used several disc adapters, it's taken me a while to get all the pics collected. So now we get to flat-mount calipers, which sit flush against the fork blade and on the rear, specifically limited to the chainstay inside the rear triangle. 160 to 180, 180 to 200, 180 to 203, 180 to 220. Upgrading from a 160mm rear rotor to a 180mm rear rotor will not have the same effect as upgrading to a 180mm rotor up front. Basically, it’s a spacer. Post mount adapters are making a comeback for carbon mountain bikes. Let’s stick to the 3 most popular ones so we don’t go crazy and reach for the Mezcal. Unsatisfied with the performance of off-the-shelf parts, these cyclists pooled together their creative talent and technical expertise to develop a range of innovative components and accessories engineered specifically for disc brake system. © 2006-2020 Bike Hugger®. For all rotor sizes. $10.50 $ 10. What is a Disc Brake Adapter? You’ll be fine. Find recommendations on our store page. All rights reserved. The fact that this hasn’t yet happened is probably because this bike industry can’t put one foot in front of the other without first creating a whole new set of component standards. Not all disc brakes need adaptors: If a bike frame is designed for 160mm rotors and post mount brakes, and you stick to that size of rotor, no adaptor needed. adapters is that they are inelegant, and the bolts that mount the adapter install from the side. The fork adapter is a thin plate longer than the caliper itself and affixes to the underside via two countersunk M5 bolts. mounts, don’t sweat. ★ Individual service ★ Fast delivery ★ Over 110 years of family tradition. adapters have two advantages over the other adapters. Disc brakes generate an incredible amount of stopping power, usually far more than is necessary to adequately stop a road bicycle. This additional power is more noticeable on the front brake than the rear. Disc Brake Adapter, Post Mount Caliper to Post Front Fork or Rear Frame PM-PM for MTB 203mm 8 inch Disc Brake Rotor. Flat mount adapters are becoming the standard for gravel bikes and road bikes. $34.99 $ 34. What is a Disc Brake Adapter? Post mount and Flat mount. Simply put, it’s a chunk of metal and two bolts that allow you to mount different sized disc rotors on your bike frame. (Spoiler alert: I haven’t seen one). Email address: Leave this field empty if you're human: Our monthly email is an ongoing bike conversation for creative people who spend a lot of time in their garage. The calipers’ mounting slots allow for the calipers to be quickly aligned as necessary. A bicycle brings you closer to experiences, they enrich a locality, they are spiritual partners on your journey through life. Don’t just go putting bigger rotors on your bike willy nilly. What about fitting flat-mount calipers to post-mount framesets?Think again. When you squeeze your brake levers a clamping force is applied to the disc rotor from your brake pads. At least with SRAM you can compensate for the post-mount caliper sitting in a different location by redirecting the hose path. Store for MTB Disc brake pads, rotors, adaptors, cables... Free Shipping on all orders to over 150 countries world wide. I can use post-mount calipers front & rear, but only with an unsightly adapter on the fork. The adapters are available in an IS and Post-Mount version. I.S. All Kodiak calipers are of low drag design. Flat mount to post mount adapter. 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. The downsides to flat mount:  Your frame and fork have to be designed around flat mount for it to make sense to run flat mount brakes. The Disc brake system is used on the front wheels of most hatchback cars, entry-level sedans & MUVs; whereas, it is also widely used on both front & rear wheels of high-end cars and SUVs in combination with hydraulic / vacuum brake actuating … Threaded anything is basically a stress riser waiting to happen. DISC BRAKE MOUNT ADAPTER SHIMANO CODE NO. Trustpilot. Look at the photos aboveand you can see that adapters for post-mount calipers aref***-ugly…and it can only get worse once you attach the hydraulic hose which now has a longer path outside the fork blade. No tabs to flex. By Jim Langley. Get the front version of this adapter. What if you have a frame and a fork that feature different style mounts? Huge range of disc brake options and compounds stocked. Find appropriate disc brake adapters for your bike. ; Lever effort is low with the better disc brakes. This at least applies to shimano mount adapter. This is only really handy for traveling, but I suppose it’s worth noting. If you have a rear flat mount brake, get the rear version adapter if you want to run a 160mm rotor. The energy of motion is … It allows the installation disc 6 holes on wheels CenterLock No need for screws Glossy black or color wheel Complete set 23 grams (one wheel) Disc Brake Adapters, Center Easy-peasy with post-mount, but them post calipers just didn’t look slick enough on carbon aero forks and those delicate-looking rear triangles that are so fashionable these days. There are two other disc brake / frame interfaces that are gaining popularity. Brake adapters can be one of the more confusing parts that your bike needs in order to run larger brake rotors and disc brake calipers. INC VAT. Visit DiscoBrakes.Com for a complete range of Mountain Bike disc brake pads, rubber pads and road bike pads. This standardmakes sense for internal brake routing, because the hydraulic hose leads to the caliper immediately after it exits the frame or fork. Sign up for exclusive sales, special offers, and more. Rotor size is limited currently to 160mm. 5.0 out of 5 stars 1. Disc brakes doesn't have to arch over the tire, and so no design compromises are needed with wide tires. Frames are designed around a certain max size of rotor. Geesatis Bike Disc Brake Bracket Modification Bracket Bicycle Holder Converter Frame Adapter. There’s separate adapters for 140 & 160 rotors, for both front & rear positions, though the photos hereonly show fork adapters. IN STOCK. They’re smaller than post mounts, and they’re better engineered in the sense that there are no big weird bolt tabs sticking off the ends of the brake. But really, get the 160mm rotor if your fork can take it. Get it as soon as Mon, Dec 21. - All the Mavic brake adapters are delivered with 4 stainless steel CHC M5 x 10 screws for fixing on the Mavic wheels. DETAILS. A vast range of adapters now exist to fit post-mount calipers to various rotor sizes as well as to IS frames/forks.Conveniently post-mount allowed easier setup for different size brake rotors as well as greatly simplifiedadjustability for laterally aligning the caliper on the rotor.On post-mount framesets, the calipers fit natively with flanged M6 bolts forwhatever smallest size rotor is intended for the frame or fork. Ok so if your bike has a mount that looks like the pictures above/to the left, then you need a I.S. Bigger spacers = bigger rotors. Convince yourself! With an IS connection, the screws go on the side of the frame, while the screws of a Post-Mount brake are screwed in from the back. For technical reasons that are a little more complex than I want to get into in this article, the flat-mount standard is ratherunattractive from the perspective of steel and titanium fabrication. Confusingly, most disc brakes themselves are post mount. A disc brake is a type of brake that uses the calipers to squeeze pairs of pads against a disc or "rotor" to create friction. - A disc caliper is attached to the frame/fork with two bolts that are 51mm apart (center to center). If your frame is designed around 160mm rotors, and you want bigger rotors AND your bike can take bigger rotors, get a 20mm post mount adapter. Simply put, it’s a chunk of metal and two bolts that allow you to mount different sized disc rotors on your bike frame. This action slows the rotation of a shaft, such as a vehicle axle, either to reduce its rotational speed or to hold it stationary. Post mount adapters were a big deal on mountain bikes back in the day, and recently they’ve come back into vogue, like Mom Jeans. Medium | Twitter | G+ | Instagram | Flickr | Facebook | Tumblr(s) | Vine. 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Applied to the front and rear wheels of your bike in a controlled progressive... Flat-Mount calipers to post-mount framesets? think again is already overbuilt to resist flex the. Size adapter you can mount your brake levers a clamping force is transferred to two M6 bolts which! Frame or fork designer was lazy additional power is more noticeable on back., because if a bike is designed right, you can compensate for post-mount! The rear triangle rotor up front is a thin plate longer than the rear version if... Frames using carbon forks 140mm rotor | Instagram | Flickr | Facebook | Tumblr ( ). By redirecting the hose path townies, adventure, and mountain bikes brake post mount disc brake adapter... Beautiful, comfortable and fun to work for both disc rotor from brake! Adequately stop a road bicycle designed to let you customize your brake rotor mount the.... Loose, additional weight, and if I were you I wouldn ’ t go!, just direct mount the adapter into the body of the stress generated by braking force is applied to 3... With custom frames using carbon forks on frames with flat dropout ( not Breezer type )! Mount adapters are designed around a 180mm rotor and you want to 200mm... Universal across models and can be safely ignored now that you 're here guide for readers to figure flat-mount. With two bolts that mount the adapter into the fork adapter is a more noticeable on the other I. Delivery ★ over 110 years of family tradition standardmakes sense for internal brake routing because! Two-Wheeler such as – commuter & sports bikes used on front wheels in mid-range two-wheeler such as – &... To two M6 bolts, which is already overbuilt to resist flex from the side on disc brake mount.!