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M7 Speed announces the release of a Standard diameter, lightweight Direct Replacement Crank Pulley for the always popular Gen 1 MINI.
Performance
The M7 Speed Standard Diameter, Ultralight direct replacement crank pulley will add power, acceleration, and performance to your MINI. Weighing in at a scant 16.4 ounces, (an amazing 88.5% less than factory) the lightweight M7 Speed Standard Diameter Crank Pulley reduces crankshaft rotational mass which equals additional increased horsepower, torque, and throttle response.
Design
This beautiful design is a result of advanced computer modeling and high precision CNC machining. Made in the USA from billet 6061-T6 aerospace grade aluminum alloy and finished with a deep black anodized coating and laser etching. The Micro V-Belt grooves are machined to exacting SAE J1459 specifications for minimum belt slippage at maximum boost. Use this in combination with the M7 Speed 16% Supercharger Technology Pulley for maximum performance and boost yourself to the next level of MINI tuning and performance.
From the factory, the GEN1 MINI suffers from two design failures related to the crankshaft Pulley; 1) The factory Pulley is press to fit on the crank. All aftermarket pulleys available are slip fit at best and rely on the bolt to provide adequate clamp force to prevent the pulley from slipping. The M7 Speed crank pulley is engineered with an interference fit onto the crankshaft eliminating pulley slippage on the crankshaft 2) The factory two-piece crankshaft Pulley will fail at approximately 1000,000 miles. The M7 one-piece design will provide multiple thousands of miles of trouble-free service.Features
Installation
Simple to install. Heat the pulley to 375/400oF (190/205oC) in your kitchen oven or using a small propane torch and heat gun and the pulley will drop straight onto the crank. When it cools it will be super tight onto the crank. Finish the installation with the supplied ARP bolt and precision flat washer and presto...more power, more reliability and more overall performance for your supercharged or non-supercharged MINI Cooper.
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Polyurethane bushings can improve a car’s handling, but can also stiffen the road, increasing noise and vibration to the cabin. If this is a concern, please do not upgrade to polyurethane bushes, or seek advice from ourselves or other owners before upgrading.
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