TRP B4 Caliper Adapter 74mm Post Mount to 51mm IS Fork Brand_absoluteBLACK 35 tire is versatile for

35 tire is versatile for numerous biking disciplines

Sleek black design with minimal branding makes the Downtown Ridepack versatile for urban commuters

Constructed with ribbed spandex cuffs and reinforced serged seams

accommodating various rim setups

TRP B4 Caliper Adapter 74mm Post Mount to 51mm IS Fork Brand_absoluteBLACK 35 tire is versatile forUpgrade Your Bicycle's Brake Compatibility with the TRP B4 Caliper Adapter, 74>51mm R180mm Optimize your bike's braking performance with the TRP B4 Caliper Adapter, designed specifically to convert 51mm International Standard (IS) frame and fork mounts to 74mm post mount calipers. Whether you're upgrading your bike's braking system or customizing for specific riding styles, this high quality adapter ensures precise fitting and reliable stopping power.