TRP TR12 Rear Derailleur and Shifter Kit - Black. The TRP TR12 drivetrain system brings World Cup downhill shifting technologies to the trails. The 12-speed design is the result of a collaboration between TRP rider Aaron Gwin and his mechanic John Hall.
This advanced derailleur includes a Hall Lock - a lever integrated into the B-knuckle mount that locks out the main pivot bolt to prevent your derailleur from lifting slapping and making noise
The Hall Lock can be turned on or off and the clamping force can be adjusted to balance stability and security with the derailleur’s ability to deflect on impact
G-Spec Ratchet Style Clutch keeps tension on the chain through the movement of a bikes travel
The clutch has integrated adjustability effectively providing the individual balance between pedal feedback and chain retention for your bikes chain growth
The shifter features linear actuation for improved ergonomics and consistent thumb contact
Enhanced grip and tactile feel is built into lever paddles
Embossed grooves on advance and release lever
Carbon fiber upper housing and advance lever
QUALITY SERVICE
Just real riders who strive to provide the best customer service.
FREE SHIPPING
Most orders over $75 ship free anywhere within the lower 48 United States
RETURNS
Not happy with your order, just send it back to us for a refund or exchange.
Our Race Team Sponsors
Also Supported By
Our Race Team Sponsors
Also Supported By
Race Team
Racing is a huge part of the culture at Lenny’s Bike Shop, and the Lenny’s Race Team represents the shop on trails and racecourses throughout the region. Made up of passionate riders who love pushing their limits, the team competes in gravity and mountain bike events while proudly representing the Lenny’s community.
Why Shop with Lenny's?
At Lenny’s Bike Shop, cycling isn’t just a business — it’s a passion. As a locally owned, full-service bike shop, Lenny’s is dedicated to helping riders of every level enjoy the sport with the right bikes, gear, and expert support.
From high-quality bicycles and components to trusted service and advice, the team focuses on delivering products and support that help you ride more and ride better.
Whether you’re upgrading your bike, tuning up your ride, or just getting started, you’ll find knowledgeable staff, great brands, and a commitment to keeping the cycling community rolling.