This 55T main gear is made for the Associated RC18T platform, finished in titanium and shipped with an alloy adaptor. It functions as a direct replacement spur for 18T chassis setups where a 55-tooth option is needed for tuning gearing and drivetrain balance.
Installation notes: the item is supplied as a single set intended to swap in for the stock spur, using the included alloy adaptor to match the gearbox interface. Verify gear mesh against your pinion and the wave washer stack, and check centre mesh throughout suspension travel to prevent binding.
Tuning role: fitting this titanium 55T gear helps maintain tooth profile under load and increases wear resistance while the alloy adaptor secures correct seating in aftermarket gearbox housings. Use it when evaluating gear ratios or aiming for consistent engagement and durability.
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