Secure the exhaust wrap with stainless steel ties
Secure the exhaust wrap with stainless steel ties
Replacement head stud
Allows your JB4 to control a WMI pump and solenoid for dynamic progressive flow mapping!
For most JB4 applications.
This product was last offered at the strikethrough price on
05-02-2026
The ProFlex Commander adaptive flex fuel system allows you to start making more power and running cooler with E85.
Heavy-duty yet compact tank that is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk.
Universal cooler used for: engine oil, transmission oil, power-steering, differential oil, and as a water/coolant heat exchanger.
2X Entries Into Our F80 M3 Sweepstakes
Universal fitment design - modifications may be necessary to run this cooler
Whether you're racing or upgrading your street car, this piston offers the perfect balance of strength and precision. Specs: 86.50 mm Bore – 1.220 in. CH, -9.40 CC
Increase performance with emissions in mind
Required for Supersprint 63.5mm Header Installation
100% handcrafted in Italy. Stainless steel construction. Legendary sound!
Requires Supersprint X-Pipe or Connecting Pipe Kit for installation
More flow for less restrictions, don't let your exhaust be the weak point of power
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
This product was last offered at the strikethrough price on
08-25-2026
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
This product was last offered at the strikethrough price on
08-25-2026
6 Flow matched E85 compatible injectors
this piston offers high performance and long-lasting durability for serious drivers. Specs 12.5:1 Compression - 86.50 mm Bore – 1.220 in. CH, -5.00 CC
These forged aluminum pistons are lightweight, which reduces reciprocating mass and enhances engine response. Specs: 87.00 mm Bore – 1.271 in. CH, -29.30 CC
With an optimized dome design and available in different compression ratios including this 11.5:1 design, this piston boosts power and efficiency. Specs: 11.5:1 Compression - 87.50 mm Bore – 1.271 in. CH, -13.80cc