Description
A 50 tooth lightweight spur gear for Kyosho's Inferno ST-R and related platforms.
The spur gear takes drive from the clutch bell and passes it into the centre differential, so it sits at the point where all of the engine's power enters the drivetrain. Tooth count sets the final drive ratio alongside the clutch bell, which is the main lever you have for matching the car to a track: fewer teeth gears the car taller for top speed, more teeth gears it down for acceleration and lower running temperatures.
The lightweight designation matters because this is rotating mass sitting in the middle of the drivetrain. Weight removed from a component that spins at high speed pays back more than the same weight taken off the chassis, since the engine has to accelerate it on every corner exit.
Spur gears are also consumables. The tooth faces wear, and a spur that has been run against a worn clutch bell wears faster still, which is why the pair are usually replaced together. Always reset gear mesh after fitting a new spur.
Dealers list fitment across the Inferno ST-R, ST-RR, MP-7.5 and MP777.
Shipping & Return
Shipping Costs By Region
Shipping to the Contiguous United States (excludes Alaska and Hawaii)
As an added benefit, customers in the continental United States can also take advantage of our economical Basic Economy shipping option which offers FREE Shipping on orders over $75 is automatically offered at checkout. If your order does not reach the $75 threshold for free shipping, we offer Flat Rate $3.99 Shipping.
NOTE: Free shipping is only available when shipping to an address in the Contiguous United States, this excludes Alaska, Hawaii and Puerto Rico.
Shipping to Alaska, Hawaii, Puerto Rico, Guam, and All International Addresses
Basic Economy Free Shipping is not available to residents of Alaska, Hawaii, Puerto Rico, Guam, and international. Customers in these locations will be charged the actual computed shipping rate at the time of checkout.
Customs Fee for International orders:
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- We cannot list any amount other than the actual amount paid by you on invoices or customs forms.
Ordering Processing Time
- All orders are shipped within 24hrs. M-Sat.
RETURNS:
- We accept returns within 30 days of purchase.
- Returns must be in it's original condition.
- Buyer is responsible for return fees.
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