Products

Kartboy Combos are a great way to save a little money when ordering Kartboy items together. All the items in these combos are listed separately on ...

This Kartboy Short Shifter replaces the stock shift lever in 2002-2007 Subaru WRX and the 2000-2004 Subaru Legacy. Overall shift throw is decreased...

This Kartboy Short Shifter replaces the stock shift lever in 2004+ Subaru STI. Overall shift throw is decreased by 40%, providing a noticeable diff...

The Kartboy Short Throw Shifter is a direct replacement for your stock unit, and it has been designed to reduce the shift throw by as much as 40%. ...

Kartboy Transmission Cross Member Bushings

These spacers are required when using Kartboy front endlinks with Whiteline and most other front anti-roll bars.

Made from precision cast aluminum, a reliability upgrade from the plastic failure prone OEM version. Long swoopy bends reduce turbulence, increase ...

Made from precision cast aluminum, a reliability upgrade from the plastic failure prone OEM version. Long swoopy bends reduce turbulence, increase ...

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase pow...

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase pow...

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase pow...

Made from precision cast aluminum, a reliability upgrade from the plastic failure prone OEM version. Long swoopy bends reduce turbulence, increase ...

Features Accelerated flow of blow-by gasses forces suspended oil droplets out of suspension. Centrifugal filtration is a proven process for separat...

Accelerated flow of blow-by gasses forces suspended oil droplets out of suspension. Centrifugal filtration is a proven process for separation of m...

This is the ultimate oil pan package that includes Killer B Motorsport's oil pan that has been designed to hold more oil while providing clearance ...

The Killer B Performance V4 Performance Oil pan is designed to reliably meet the demands of high performance Subaru Engines used on street or track...

More power due to the reduction in oil interfering with the rotation of the crank and allowing it to spin more freely. Unless it’s in the bearings,...

**Special Order 30 Day Lead Time From Killer B** Only intended for highly modified track cars, specifically with a boxer engine, able sustain +1.4G...

Special Order 30 Day Lead Time From Killer B Only intended for highly modified track cars, specifically with a boxer engine, able sustain +1.4Gs co...

This kit contains all the hardware that comes with the Killer B Motorsport oil pan.

The Killer B Motorsport Relocated Oil Fill Tube changes the location of the oil fill tube and cap. This product was designed from customer requests...

NOT a Copolymer Shift Knob. Made from the superior material Delrin. Wonderful feel to this material, never too hot or too cold. The Delrin Shift Kn...

NOT a Copolymer Shift Knob. Made from the superior material Delrin. Wonderful feel to this material, never too hot or too cold. The Delrin Shift Kn...