The last expansion tank you'll ever need! Upgrade to durable aluminum construction and leave failure-prone plastic behind.
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Includes new Valvetronic motor, gasket, and hardware
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! For vehicles equipped with a plastic valve cover.
Brand:
ES#:
4056599
Mfg#:
11377548388KT
In Stock
ON SALE!
SAVE 24%
$220.99
This product was last offered at the strikethrough price on 05-02-2026
Replace your restrictive air box with these dual high flow cone filters for the highest possible air flow!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms CARB certified for sale in all 50 states
Eliminate excessive body roll, improve handling, and gain a more engaging driving experience. Use alone to reduce oversteer or pair with an upgraded rear bar.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
2769930
Mfg#:
007278ECS01A
In Stock
ON SALE!
SAVE 10%
$324.99
This product was last offered at the strikethrough price on 05-02-2026
The pump is completely E85 compatible and fully plug and play with no cutting or splicing of any kind required. The added flow will let you run much higher ethanol concentrations and also allow fueling for bigger turbos.
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The ultimate in thrust arm upgrades!
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Brand:
ES#:
3491050
Mfg#:
022010TMS02
In Stock
ON SALE!
$689.99
This product was last offered at the strikethrough price on 05-02-2026
The XClutch Stage 2R Single Disc Clutch offers a lightweight design for improved throttle response combined with an increased torque capacity, making it ideal for racing applications. Rated for 670 ft-lbs!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For Vehicles with Production Date from 02/09 with 6 Bolt Crank For Vehicles with Production Date from 02/09 with 6 Bolt Crank
Includes a standard 5 bar regulator. Allows for maximum flow, lower current draw, and fuel pressure regulation in a single package!
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Expertly matched performance Eibach Pro-line lowering springs and Bilstein shock/strut package for a dramatic increase in performance handling. World-famous Bilstein quality with a limited lifetime warranty!
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For vehicles with EDC suspension
Brand:
ES#:
4390695
Mfg#:
46-276346
In Stock
$2611.00
This product was last offered at the strikethrough price on 05-05-2026
Add the aggressive look of the ZCP competition package to your M3
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
2643158
Mfg#:
E9XM3PSPLIT
In Stock
ON SALE!
SAVE 20%
$521.99
This product was last offered at the strikethrough price on 05-02-2026
Full upgraded performance ignition service including Brisk 1 step colder spark plugs, dielectric grease and Turner ignition coils!
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Brand:
ES#:
4690416
Mfg#:
N54IGNTKT
In Stock
ON SALE!
$296.99
This product was last offered at the strikethrough price on 05-02-2026
Perfect for aggressive street and moderate racing demands. Conservatively rated up to 520 ft/lbs torque capacity.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Must be used with ACT or Turner Lightweight flywheel For vehicles with production date 2007-2009
New M-Sport style front bumper, primed and ready for paint
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! For LCI/Face lift vehicles only For vehicles with a production date from 03/2010
Improve the comfort, performance, and style of your E9X! Includes all hardware needed for installation.
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Brand:
ES#:
5396580
Mfg#:
029310ECSKT
In Stock
ON SALE!
SAVE 11%
$1399.99
This product was last offered at the strikethrough price on 03-20-2026
The twin disc 9 inch with ceramic friction discs is designed for high horsepower motorsport applications where a high heat and torque capacity is required. Rated for 1350 ft-lb!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For 6 bolt crank applications only For vehicles with 6 bolt crank/flywheel only
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
