The Rapidé GearHead®16 smooths out the jumps between gears for cassettes converted to wide range 11-40t and 11-42t configurations.
Reducing the tooth difference created by removing the 15t or 17t cog from 4 teeth to 3 makes it easier to maintain an efficient leg speed while moving through the cassette.
The specially developed multi-level shifting ramps have made it possible for the GearHead®16 to work with SRAM® and Shimano® cassettes without the need to change the cog clocking position.
Heat-Treated 4130 Cro-Mo
Multi-Level Shift Ramps for perfect gear changes
Compatible with Shimano® and SRAM® cassettes
Single mounting position works with all cassette types
Rapidé GearHead® Range Extender 16t Cassette Cog Installation
Cassette compatibility – you will need a 11-36t cassette such as:
Shimano®: XT 11-36t (CS-M771), XTR 11-36t (CS-M980), SLX HG81 11-36t *With the Shimano® SLX cassette you will need to use a hack saw to cut the bolts that hold the lower three cogs together. It’s not a difficult job but if you are unsure get some help from a suitably competent person or bike mechanic.)
SRAM®: PG 1030, 1050, and 1070 – 11-36 and 12-36
Fitting the Rapidé GearHead® Range Extender 16t Cog
Remove the cassette from the free-hub as normal (with a chain whip and lockring tool).
Remove the 17 tooth sprocket and spacer and the 15t sprocket from the cassette. Replace with the Rapidé GearHead 16t sprocket for the ultimate smoothness in jumps between gears
Tighten up the lockring.
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