Wake up your BMW with dyno-proven gains by Jim Conforti - +23HP +23LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with a manual transmission and a productio
Brand:
ES#:
3136873
Mfg#:
4040-3100
In Stock
ON SALE!
SAVE 20%
$249.99
This product was last offered at the strikethrough price on 05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +19HP +33LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles with a manual transmission and a production date thru 12/94, 0-261-200-404, 4040-4000, with emissions air pump, 1744050 ECU for vehicles thru 12/94, 0-261-200-404, 4040-4000, with emissions air pump, 1744050 ECU
Brand:
ES#:
3129910
Mfg#:
4040-4000
In Stock
ON SALE!
SAVE 20%
$249.99
This product was last offered at the strikethrough price on 05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +23HP +23LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with an automatic transmission and a produ
Brand:
ES#:
3136148
Mfg#:
4040-3010
In Stock
ON SALE!
SAVE 20%
$249.99
This product was last offered at the strikethrough price on 05-02-2026
Lightweight wheel spacers with a machined tab for easy removal
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Wake up your BMW with dyno-proven gains by Jim Conforti - +43HP +21LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with a manual transmission
Brand:
ES#:
3098093
Mfg#:
179-500
In Stock
ON SALE!
SAVE 20%
$249.00
This product was last offered at the strikethrough price on 05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +43HP +21LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with an automatic transmissionn
Brand:
ES#:
3098096
Mfg#:
179-510
In Stock
ON SALE!
SAVE 20%
$249.00
This product was last offered at the strikethrough price on 05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +15HP +15LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with automatic transmission and Bosch DME
Brand:
ES#:
3098225
Mfg#:
173-510
In Stock
ON SALE!
SAVE 20%
$249.00
This product was last offered at the strikethrough price on 05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +15HP +15LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with manual transmission and Bosch DME #0-
Brand:
ES#:
3137200
Mfg#:
524-500
In Stock
ON SALE!
SAVE 20%
$249.00
This product was last offered at the strikethrough price on 05-02-2026
Wake up your BMW with dyno-proven gains by Jim Conforti - +15HP +15LB/FT
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Satisfaction guaranteed! Includes 30 day money back guarantee and limited lifetime warranty. -- For vehicles with manual transmission and Bosch DME #0-
Brand:
ES#:
3098224
Mfg#:
173-500
In Stock
ON SALE!
SAVE 20%
$249.00
This product was last offered at the strikethrough price on 05-02-2026
Set of DOT-compliant lines for an improved pedal feel
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For model years 1989 - 1993
Lightweight wheel spacers with a machined tab for easy removal
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Safely install 10mm spacers by extending the surface area of your hub
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
3036635
Mfg#:
TWH9905002K1
In Stock
ON SALE!
SAVE 15%
$228.99
This product was last offered at the strikethrough price on 05-02-2026
All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.
Lifetime Replacement
