KraftWerks · New
KraftWerks Supercharger Rotrex C38-81
MPN R50-3881-000 · Store SKU krtR50-3881-000
Supplier stock checked 11/7/2026, 9:18:22 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The Rotrex C38-81 supercharger is a medium range C38 and can fit a wide range of applications. This compact unit is capable of producing up to 600hp, on engine sizes ranging between 2.4-6.0L. Using the patented Rotrex planetary traction drive, the C38-81 has a 7.5:1 drive ratio and can achieve impeller speeds up to 90,000RPM! Supercharger Head Units; 7:50:1 Drive Ratio; Supercharger Head Units
Manufacturer fitment & guides
Check R50-3881-000 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
