Aprilia RS660 Undercut /Micro Polished Transmission 2020/Current

Description

The Aprilia RS660 Undercut /Micro Polished Transmission 2020/Current will keep you in the game and not worrying about why the bike drops gears when it wants to.

Understanding the the Aprilia has a casted “Attempt Undercut Transmission” when the motorcycle is pushed to the limits on a race trace the issues will start to surface.

As a lot of the current Moto America racers and engine builders now that once these bikes are pushed to the limits issues with their transmission popping out of gear will be an issue, you want to take to the next level, let us know.

Being on the race track is a lot of fun and at the same time serious business, this is a common complaint we get at Spears Racing “I am in the top end of 5th gear and fully pegged on the throttle, all of a sudden it goes into 4th gear or a false neutral” Yes very common and this is why we have transmissions on the shelf for the fast exchange program  

Spears Racing has been doing undercut transmissions for decades and has decided to specialize in the lightweight transmissions with what we call the “Race Cut” this is essentially our way of doing the process of undercutting Transmissions( in the engagement direction only)

Once the undercutting process has been achieved, we then begin to work within the particular application to complete by blasting all of the transmission gears to maximize the surface area for cleanliness and inspect that the gears spacers, washers are ready to assemble back onto the shafts.

Micro Polishing is  a procedure that all of the gears and the shafts are tumbled in a synthetic solution with special Media we have found to be the best finish, this procedure will remove the roughness peaks are removed, reducing the roughness profile height, therefore, this method increases the contact bearing area of the gear flanks Reduce Friction, Increase Efficiency Increase Effective Horsepower, Increase Power Density, Lower Operating Temperature, Extend Component Life, Increase Part Durability.

https://spearsenterprises.com/our-services/#micro-polishing

Undercutting is one of the most highly regarded modifications for race motorcycles. Many manufacturers do not undercut their transmissions at the factory. Undercutting involves the modification of the drive dogs and slotting to precise angles. Creating an interlock of the gears under acceleration, virtually eliminating the occurrence of an involuntary gear jump. Most drive dogs from the factory posses a ZERO degree back cut, producing rounded gear corners under normal wear, in turn creating involuntary disengagement. Spears Racing ‘sunder-cutting service can precision cut your transmission to perform at its most accurate and true level of performance.

https://spearsenterprises.com/our-services/#undercut-transmissions

Aprilia RS660 Undercut /Micro Polished Transmission 2020/Current Transmissions are in Stock

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