2018 BMW X3 M40i Performance Parts

This includes a full set of replacement O-rings for your VTT Coolant hose kit.

Looking to convert your 5×112 M14x1.25 BMW vehicle to 5×114 to open up your wheel options? Want to drop 60% of the weight off steel options? We got covered with our VTT TITANIUM wheel stud conversion kits. These kits are Grade 5 Titanium studs,...

Looking for a way to do burnouts in your ATC13-2 Equipped Xdrive BMW that doesn’t have an RWD mode such as G-Series non-M vehicles, and SUVs? We were too! VTT is proud to offer the ONLY easy-to-install, plug, and-play Xdrive controller on the market....

Spool Performance 8HP45, 8HP50, 8HP51 Stage 2 Upgraded Transmission DIY Parts Kit After over a year of rigorous testing, Spool Performance proudly presents our Stage 2 Transmission Kits for the 8HP45, 8HP50, and 8HP51 series transmissions. Engineered to surpass the limitations of stock components,...

Looking to fix the diff bolt issue on your G0X X3/X4, G3X 5 Series, and G1X 7 Series chassis? VTT is proud to offer our Rear diff bushing insert kit. This is pressed into the factory bushing and fills the voids in the bushing....

We have been getting a lot of requests to have the DIY Kits installed and transmissions built at Spool Performance and we are listening and adding that option for everyone.  This listing includes parts and labor for overhauling a ZF8HP45/50/51 in good working condition...

Spool Performance B58 Engine Build Program DO NOT CALL. After careful consideration and increasing demand from our customers, we are proud to officially launch our B58 Engine Build Program. For years, we refrained from offering engine build services publicly due to market conditions where...

Spool Performance 8HP45 / 8HP50 / 8HP51 upgraded billet 7075-T6 D Clutch Drum The factory A380 cast-aluminum D-drum in the ZF 8HP45/50/51 is one of the weak links once power levels rise - prone to cracking, distortion, and oil starvation under high load and...

VTT -16 Billet HIGH-FLOW Catch Can System Maximum Venting for Maximum Power VTT is proud to introduce our -16 Billet High-Flow Catch Can System - designed from the ground up for high-horsepower applications requiring serious crankcase ventilation. Whether you’re pushing over 900WHP or beyond...

VTT B58 (TU) HMM Delete Plate Looking to build a race car with a B58 engine?Doing a B58 swap and don’t want the complicated BMW Heat Management Module (HMM)?Need a simple -16AN or -20AN line setup instead of the factory tangle? If so, the...

Spool Performance B58 Gen 2 Auxiliary Fuel System The Spool Performance B58 Gen 2 Auxiliary Fuel System is designed for B58 Gen 2 owners pushing beyond the limits of the factory fuel system who want a solution that’s properly engineered, easy to install, and...

Spool Performance B58/S58 Billet Race Torque Converter Upgrade Introducing the Spool Performance X58 Billet Race Torque Converter, engineered for all B58 / S58-powered vehicles equipped with the ZF 8HP50, 8HP51, or 8HP76 transmissions. Built to handle serious power, our X58 converter features: Billet drive...

VTT S58 / B58TU Crankcase Vacuum Pump Kit If you’re building a serious S58, or B58TU, crankcase pressure is one of the biggest hidden enemies of engine performance. Excess crankcase pressure reduces ring seal, increases blow-by, contaminates engine oil, and costs horsepower. The goal...

SPOOL 8HP45 / 8HP50 / 8HP51 & 8HP70 / 8HP75 / 8HP76 Billet Main Shaft We spent 3 years developing this shaft to build something we genuinely felt was missing from the 8HP market - a true billet main shaft made for serious power....

Maintain the performance and filtration efficiency of your Eventuri intake system with the genuine Eventuri Type L Replacement Filter. Specifically engineered for Eventuri’s patented reverse-mounted filter housings, this filter preserves the optimized airflow characteristics that define the Eventuri intake architecture. Unlike generic cone filters...