The M7 Speed Overdrive Pulley Kit has everything needed to overdrive (speed-up) your supercharger 20% from factory. By overdriving your supercharger you get greatly improved low RPM power, better throttle response and a bigger smile when you put your foot into it!

Power Up Supercharger Overdrive Kit Includes

• M7 Speed 16% Overdrive supercharger pulley
• M7 Speed 4% oversize diameter Lightweight Overdrive crank pulley
• Proper length Micro-V Drive belt for this pulley combination

The M7 Supercharger Pulley features a 16 percent reduction in diameter and a number of improvements over stock and other aftermarket pulley designs.Our design allows the pulley to be easily positioned deeper onto the supercharger shaft for proper belt alignment and shaft grip from the locking collet. We added shoulders to the outside of the pulley to help prevent the belt from walking off of the pulley surface if you have a weak tensioner or the belt stretches at extreme RPM events. The drive belt grooves are machine to exacting SAE-J1459 specifications. The M7 SC Overdrive Pulley also incorporates an active cooling system that pulls in cool air through the holes in the pulley shoulder, keeping belt temperature down. Made from high quality aircraft grade billet steel and gold zinc plated for corrosion resistance and years of trouble-free performance. Our proprietary taper-loc shaft locking system offers the highest locking force to the supercharger shaft at the lightest weight. The M7 taper-loc is superior to any other design on the market....PERIOD! This high grip taper-lock system offers both ease of installation and slip free supercharger performance. By design, the assembly is 100 percent balanced out of the box.

The M7 Speed 4% oversize Lightweight Crank Pulley is a beautiful race inspired design. The design has been verified by computer modeling and 20 years of on-road and on-track use without one reported failure. This part is 100% precision CNC machined to exacting specifications and then a black anodized coating is added to protect your investment from the elements and ensure a lifetime worth of use. 

The V-Belt grooves are machined to exacting SAE-J1459 specifications for minimum belt slippage at maximum boost. At 17 oz (1.06) lbs, the lightweight M7 standard dia Crank Pulley assists in reducing rotational mass, which in turn increases horsepower, torque and throttle response. Use this in combination with the M7 16 percent Supercharger Pulley for maximum performance and boost yourself to the next level of MINI tuning and performance. Now comes with a brand new high quality ARP bolt and hardened washer for an extra level of assurance.

With well over a decade of experience, the tuning experts at M7 have carefully hand-picked the components for each kit so that they work in harmony to produce the highest power levels. They are also designed to meet strict reliability standards.