Profile Design 52a Aluminum Aerobar Extensions - Aluminum 400mm Black. 52a Aluminum Aerobar extensions provide a comfortable position for the riders hands relative to the armrests. They enhance performance by allowing the rider to relax into their optimal position so each rider can chase their best performance.
52a extensions have a 52 degree angle for the grip. The rider can choose whether to hold high for the shrugged position or low for a more open head up position
7.5mm lateral shift per side allowing the rider to get their hands narrower or wider without tilting the extensions so much that the shifters touch
Aluminum construction pre-drilled for bar-end shifter cable routing
Designed for cables to be routed out the rear of the extensions; no need for cable exit holes
22.2mm diameter in the clamping area
Compatible with electronic or mechanical shifters
TECH SPECS
Material AluminumColor Black
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.