Kawasaki Ninja 400cc Undercut /Micro Polished Transmission 2018/2022
$650.00 – $1,400.00
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 .
These Transmission are IN Stock
Exchange For your Stock one or a Core fee will be added
The Kawasaki Ninja 400cc undercut transmission will keep you in the game and not worrying about why the bike drops gears when it wants to.
As a lot of the current racers and a few of the new racers know that the little bikes do have issues with their transmission popping out of gear, these motorcycles are built as a commuter low budget bike that we, you want to take to the next level.
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.
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.
Transmissions are in Stock