Wake up your BMW with dyno-proven gains by Jim Conforti - +22HP +20LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty -- M3 muffler & lightweight flywheel
- Brand:
-
- ES#:
- 3137012
- Mfg#:
- 4131-0005
In Stock
ON SALE!
SAVE 20%
Lifetime Replacement
$349.00
$279.20 USD
This product was last offered at the strikethrough price on
05-02-2026
Free Shipping
Lifetime Replacement