{"product_id":"shimanobrakeadaptor4mmhexsm-ma90-r160psrearistopostmount160mm","title":"Shimano Brake Adaptor (4mm Hex) SM-MA90-R160P\/S Rear IS to Post Mount 160mm","description":"\u003ch2\u003eShimano SM-MA90-R160P\/S gives your IS-mount frame a modern post mount brake setup, with no fuss and no compromise on stopping power.\u003c\/h2\u003e\n\u003cp\u003eGot an older frame with IS2000 mounts and a modern post mount caliper that just won't play ball? The Shimano SM-MA90-R160P\/S is the fix. It converts a rear IS2000 (51mm International Standard) frame tab into a clean 74mm post mount interface, correctly positioning a post mount caliper for a 160mm rear rotor. No hacks, no workarounds, just a proper Shimano solution.\u003c\/p\u003e\n\u003cp\u003eShimano machines the SM-MA90 from aluminum alloy, with material removed from the center to shave weight without giving up the stiffness needed for consistent, reliable brake feel. The result is a tidy, purpose-built adapter that looks like it belongs on the bike, not an afterthought. Mounting hardware is included, and a locking wire keeps the bolt secure once everything is torqued down.\u003c\/p\u003e\n\u003cp\u003eThis adapter is specific to rear applications with 160mm rotors, which is the go-to size for most cross-country and trail builds. It works with all Shimano 74mm post mount calipers, so whether you're running SLX, XT, or XTR, you're covered. Small part, big difference.\u003c\/p\u003e\n\u003ch3\u003eWhy You'll Like It\u003c\/h3\u003e\n\u003cp\u003eTinkerers and build-it-yourself trail riders get a genuine Shimano solution that keeps older IS-mount frames in the game with modern hydraulic calipers. Your rear brake setup will be properly aligned, rattle-free, and dialed in for a 160mm rotor without any sketchy third-party adapters. Grab this, torque it down, and get back to riding.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConverts rear IS2000 (51mm) frame tabs to 74mm post mount interface for 160mm rotor use\u003c\/li\u003e\n\u003cli\u003eLightweight aluminum alloy construction with machined center window to reduce weight\u003c\/li\u003e\n\u003cli\u003eCompatible with all Shimano 74mm post mount brake calipers, including SLX, XT, and XTR\u003c\/li\u003e\n\u003cli\u003eIncludes mounting hardware and a locking wire to secure the bolt after installation\u003c\/li\u003e\n\u003cli\u003eRear-specific geometry, correctly positions the caliper for a 160mm rotor at the back wheel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":51348548649275,"sku":"4524667430513","price":25.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/8626\/9784\/files\/Shimano-Brake-Adaptor-4mm-Hex-SM-MA90-R160P-S-Rear-IS-to-Post-Mount-160mm.jpg?v=1781523611","url":"https:\/\/reevolution.sg\/products\/shimanobrakeadaptor4mmhexsm-ma90-r160psrearistopostmount160mm","provider":"ReEvolution","version":"1.0","type":"link"}