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This product was last offered at the strikethrough price on
08-13-2026
Elevate your BMW's performance with the JMTC Dual Scroll JM40 K03 turbocharger, meticulously engineered as a reliable and high-performance upgrade compatible with all OEM components. Featuring a high-flow twin-scroll design with an extended tip compressor, this turbocharger ensures early boost delivery and sustained performance throughout the RPM range. Experience exceptional torque, rapid spooling, and sustained power gains across the power-band, offering superior response and increased performance for your BMW.
Upgrade your Mini's performance with the ALTA Lightweight Crank Pulley (LCP), designed to increase horsepower and torque. Available in two sizes - 0% Stock Sized and +2% Oversized - this pulley is engineered for Supercharged Cooper S models. Crafted from 6061T6 aluminum, the ALTA pulley is lightweight, weighing just 0.65 lbs, providing a weight reduction of over 2.3 lbs compared to the stock crank pulley.
Enhance the performance of your Mini with the ALTA Lightened Crank Pulley (LCP), engineered to increase horsepower and torque. Available in 0% Stock Sized and +2% Oversized options, this pulley is crafted from 6061T6 aluminum, weighing only 0.65 lbs. Significantly lighter than the stock crank pulley, the ALTA LCP ensures improved engine efficiency without adding vibration or noise. The +2% Oversized pulley provides additional boost for Supercharged Cooper S models, delivering safe and reliable performance. With increased belt contact, this pulley reduces wear and enhances durability, making it a must-have upgrade for Mini enthusiasts.
Crafted from machined 6061 billet aluminum, the ALTA Performance Pulley Removal Tool is specifically designed for the non-JCW MINI Cooper S, offering a convenient way to enhance power quickly and effortlessly, whether you're in a workshop or your backyard. This versatile tool ensures durability and can be utilized repeatedly with proper usage, maintenance, and care. An essential addition for MINI specialty shops, this tool is compatible with all OEM-sized pulleys, except for JCW variants. Note: A steering wheel puller is necessary for the removal of the stock supercharger pulley.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
Enhance your Mini's performance with the ALTA Supercharger Pulley, crafted from lightweight 6061T6 aluminum. This pulley reduces the rotational inertia of the supercharger, significantly enhancing engine responsiveness. Featuring cross-drilled holes over each groove, it improves belt grip and minimizes belt slippage as the belt stretches. Additionally, oversized belt retainers prevent belt jumping.
ALTA offers two reduction sizes: 15% and 17%, each providing distinct benefits.
These kits are designed to be installed inline with your stock low-pressure fuel pump (LPFP). They provide approximately 50% more flow when combined with your stock pump.
Kit includes the following:
*Note: Walbro does not warranty this pump for E85 use. If your application requires an E85 certified pump you may want to consider selecting a Stage 2 fuel kit.
** IMPORTANT: Do NOT attempt to run this kit inline with a Stage 2 kit. The Stage 2 kit is a higher flowing kit and this will not only restrict the flow of the stage 2 kit, it will result in failures.
For MINI enthusiasts seeking a powerful upgrade, the JMTC Super S F56 turbocharger is engineered for both street and track performance. Designed with a 50mm compressor and a 9-blade high-flow turbine, this turbocharger offers rapid boost and significant power gains at higher RPMs. It maintains the quick response of the original turbo while delivering increased torque and horsepower.
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This is a complete plug and play solution to replace your stock Low-Pressure Fuel Pump (LPFP) with a new E85 certified bucketless assembly.
This solution provides up to 25% more flow than our standard Stage 2 LPFP upgrade and up to 150% more flow than the stock pump.
This pump will support up to 550whp running 85% ethanol and 600whp running 50% ethanol.
The Stage 2 bucketless kit includes the following:
If you still need more flow, the Stage 3 upgrade is also available and can be added to your Stage 2 bucketless pump.
The Stage 3 upgrade kit includes:
This is a complete Low-Pressure Fuel Pump (LPFP) upgrade that replaces your stock LPFP assembly with a new E85 certified one. The new Walbro 450 pump provides approximately 100% more flow than stock and this assembly can be purchased one of three ways to meet your needs.
Both options include the following:
To be eligible for a core return, the bucket must be completely stock and undamaged. (Pump itself does not have to be functioning)
+ International customers: Due to different emissions requirements, the top portion of your fuel bucket (top hat) is different and doesn't have a large vent tube connection. For this reason, we are no longer sending the top hat to international customers as this often causes confusion. Those customers will simply re-use their current top hat when installing their Stage 2 pump.
- All Stage 2 assemblies are stock buckets that have been rebuilt and may show signs of being disassembled and rebuilt. They are all flow tested and verified before being shipped.
BMW F8X S55 Flex Fuel Kit | Fuel-It! from Turner Motorsport is essential for those running E85 or ethanol blends in their BMW. This comprehensive kit offers a plug-and-play solution for installing a Bluetooth ethanol sensor in your S55-powered vehicle.
MINI B38/B36 JMTC Refurbished Turbocharger offers a complete overhaul to restore turbocharger performance to a like-new condition. JMTC's refurbishment process includes a thorough cleaning and replacement of all internal components that may have been worn or damaged, such as turbine shaft bearings, thrust bearings, pressure seals, cartridges, and end housings. Components not meeting stringent standards are replaced, ensuring optimal performance.
Additional Recommendations:
JM Turbo Cooper offers the Extreme GTD47 K04 turbocharger upgrade designed to deliver outstanding reliability and high-performance gains for the 2007+ MINI Cooper. This upgrade is a top choice for Mini and Peugeot owners, providing exceptional power output for applications exceeding 280hp.
Update: The improved gasket design on the back side now features a seamless gasket inset, and the package includes a new gasket for your convenience.
The JMTC Extreme GTD47 upgrade boasts a high-pressure, high-flow, dual-scrolling turbo that features a substantial 50mm compressor wheel. This design ensures maximum boost at the top end of the RPM range, making it ideal for track, off-road, and extreme street applications. The large GTX exhaust turbine complements the setup, delivering extra boost at high RPMs and preventing torque loss compared to the stock K03 turbine.
Whether you seek extreme track performance, drag strip dominance, or unrivaled street upgrades, this turbocharger is the perfect choice. It offers impressive torque and durability, outperforming many other options on the market. To fully unleash its potential, we recommend pairing it with one of our aftermarket exhaust systems.
It's important to note that to harness the additional power, a custom tune is required. Running without a tune will result in minimal to no HP gain.
Estimated Power Gains:
Extreme GTD Upgrade Features:
For engine and turbocharger reliability, JMTC recommends a 3.0" or larger downpipe/exhaust size for the GTD turbochargers. Please avoid using the stock downpipe or stock-sized catalytic converter.
The OEM intake boot can be used with the removal of the inner sleeve for N14 engines. For N18 engines, the OEM boot at the turbo connection will need to be heated and expanded slightly, which can be done with a heat gun. This turbocharger also fits AEM intake, NM Eng intake, and Forge Intake (Boot). Please note that the hose might need to be warmed and stretched over with a hose expander.
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-07-2026
Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicone steel These springs are manufactured with state-of-the-art equipment. Ferrea springs are heat-treated and stress-relieved, which dramatically increases the spring's life. Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea valve springs provide the stability needed for high lift, high rpm racing and street car engines. Kit includes a set of 24 springs. MUST be used with the Ferrea Spring Seat and Titanium Retainers. See links below.
https://www.turnermotorsport.com/e/p-163-e36-325-328-m3-ferrea-spring-seat-set/
https://www.turnermotorsport.com/e/p-31-e36-325-328-m3-ferrea-titanium-retainer-set/
This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i
This is a complete Low-Pressure Fuel Pump (LPFP) upgrade that replaces your stock LPFP assembly with a new E85 certified one. The new Walbro 450 pump provides approximately 100% more flow than stock and this assembly can be purchased one of three ways to meet your needs.
Both options include the following:
To be eligible for a core return, the bucket must be completely stock and undamaged. (Pump itself does not have to be functioning)
+ International customers: Due to different emissions requirements, the top portion of your fuel bucket (top hat) is different and doesn't have a large vent tube connection. For this reason, we are no longer sending the top hat to international customers as this often causes confusion. Those customers will simply re-use their current top hat when installing their Stage 2 pump.
- All Stage 2 assemblies are stock buckets that have been rebuilt and may show signs of being disassembled and rebuilt. They are all flow tested and verified before being shipped.
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
MINI R55 to R59 JMTC MCS Refurbished Turbocharger N18
The MINI R55 to R59 JMTC MCS Refurbished Turbocharger N18 offers exceptional performance with its high-flow twin-scroll turbine and extended tip compressor. This turbocharger enhances boost response, delivering significant torque and power gains across the entire power band. Designed for early spool-up and sustained high RPM performance, it achieves optimal results when paired with an aftermarket exhaust system.
Additional Information:
Notes:
This product was last offered at the strikethrough price on
05-02-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
05-03-2026
This product was last offered at the strikethrough price on
07-27-2026
This product was last offered at the strikethrough price on
07-27-2026
Crafted from lightweight 6061T6 aluminum, the ALTA SC pulley body reduces the supercharger's rotational inertia, significantly enhancing your Mini's engine responsiveness. This innovative pulley design integrates cross-drilled holes to amplify belt grip and mitigate belt slippage, especially during belt stretching. Furthermore, it incorporates oversized belt retainers to prevent belts from jumping off. Available in two sizes—15% and 17% reductions—the 15% reduction option, a market standard, delivers safe power gains of around 20WHP, ensuring a smoother and enhanced performance.