The Tamiya 54906 M-08 Concept Aluminum Shaft Set OP-1906 is a compact upgrade that swaps the steel centre, counter and idler shafts for aluminium replacements. The change drops weight by 5.8 grams, helping the car turn and respond more readily during aggressive driving.
Lower shaft mass reduces inertia in the drivetrain, so acceleration and throttle transitions feel quicker. That responsiveness can be particularly useful when you are trying to tighten lap times or improve corner exit pace.
Made to fit the M-08 Concept without modification, these shafts can be installed with routine tools and basic workshop skills. Check alignment and bearing play after fitting to ensure smooth operation.
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