Air and Fuel› Superchargers, Turbochargers and Components

Kraftwerks

K-Series Race Kit with C38 Supercharger

$3,335.74

SKU: 150-05-0038K

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The Kraftwerks K-Series Race Kit is a supercharger system designed for K engines, featuring the Rotrex C38 Supercharger. This kit offers a linear power curve, torque on demand, and cooler operating temperatures compared to turbochargers. The Rotrex unit utilizes traction drive technology for high efficiency and quiet operation, with a self-contained oiling system. The kit includes billet aluminum brackets, a C38 Rotrex head unit, and various hardware. It is compatible with K20A, K20A2, K20A3, K20Z1, K20Z3, K24A1, K24A2, K24A4, and K24A8 engines.
Show original supplier description
At its core is the highly efficient Rotrex C38 Supercharger, delivering impressive performance gains across the entire power band. This supercharger system provides a smooth, linear power curve with immediate throttle response and torque on demand, avoiding the spiking or surging often associated with turbochargers. This unique power delivery reduces stress on engine components, enhancing reliability and engine longevity. Rotrex superchargers are known for their compact size, high adiabatic efficiency, minimal vibration, and quiet operation, thanks to their patented traction drive technology. Each Rotrex unit has an independent, self-contained oiling system with a dual-action oil pump and a supplied cooler to maintain optimal fluid temperatures. Installation requires custom fabrication for the supercharger inlet pipe, charge pipes, and intercooler, as well as the necessary support parts and engine tuning. The kit is compatible with the following engines: K20A, K20A2, K20A3, K20Z1, K20Z3, K24A1, K24A2, K24A4, and K24A8. Proper supercharger pulley sizing depends on your specific build specifications and crank pulley size; this information must be provided during the ordering process.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKraftwerks
Part Number150-05-0038K
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy