Description
Notes from MyBikeThing
Representing Shimano’s bold aero revolution, these Dura-Ace AX brake levers were part of the first aerodynamic-focused groupset in cycling history. Featuring distinctive recessed cable routing and streamlined design, these levers showcase Shimano’s commitment to wind-cheating innovation through cold-forged aluminum construction and internal engineering. What sets these apart is their groundbreaking aero design that preceded today’s internal cable routing by decades – they’re the original aero brake levers that changed how we think about bicycle aerodynamics.
Condition
Mechanically excellent with the dignified wear of proper use. Pivot action is smooth and positive on both levers, with original springs maintaining proper return tension. The Dia Compe hoods are remarkably well-preserved, maintaining their suppleness without the typical hardening or cracking. Hidden cable channels remain clean and smooth, and the quick-release mechanisms operate flawlessly.
Tech Specs
- Cold-forged aluminum construction with aero cable routing
- Weight: 166 grams (pair)
- Compatible with standard brake calipers
- Quick-release mechanism integrated
- Original Dia Compe hoods included
- Complete with bar clamps
- Unique AX-specific cable routing design
- Includes OEM stamped L and R levers
- Includes the OEM clamps (not the ones in the main pics – look for the pic with the clamps only)
- Includes Dia-Comp hoods
Value Assessment
- Market Value: $225-285 USD
- Original Retail: $125.99 (1981)
Worth it because:
- BL-7300 AX series represents Shimano’s first aero innovation
- Built to last with serviceable, replaceable components
- Hoods in exceptional condition
- Historically significant design that influenced modern aero components
Workshop Wisdom
The AX series brake levers require specific cable routing attention due to their unique internal design. Here’s a pro tip: When installing, use premium stainless cables with a light coating of dry PTFE lubricant – this prevents binding in the tight bends and ensures smooth operation. The extra care in setup pays off with crisp brake response and clean aesthetics.
Fascinated by the AX series? I’m Paul, and I share your appreciation for these innovative components. Let’s talk about your build and how these pioneering aero levers might fit into it.
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