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M7 Speed

M7 Super Lightweight Crank Pulley | 4% - 53-3M7101-4

6 reviews Write a Review
MSRP: £144.72
£144.72
£123.01
(You save £21.71 )
3 sold in last 2 days
SKU:
53-3M7101-4
UPC:
680596520788
Condition:
New
Shipping:
Calculated at Checkout
MPN:
53-3M7101-4
5 customers are viewing this product
M7 Super Lightweight Crank Pulley | 4% - 53-3M7101-4

M7 Super Lightweight Crank Pulley | 4% - 53-3M7101-4

MSRP: £144.72
£144.72
£123.01
(You save £21.71 )

Description

Performance

The M7 Speed 4% oversize - speed increasing crankshaft pulley will add power, acceleration and performance to your MINI.  Speeding up your supercharger safely adds "low end" boost and torque which gets your MINI Cooper going. Weighing in at a scant 13 ounces, (an amazing 88.5% less than factory) the lightweight M7 Speed 4% 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 MINI suffers from no positive drive key on the crankshaft snout to drive the lower pulley. The factory pulley is press fit onto the crank. All aftermarket pulleys 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.

Features

  • Super Lightweight. Weighs in at 13 ounces (0.3 kg)
  • Save 6.2 lbs (2.8 kg) from stock
  • Reduces damper weight by an amazing 88.5%!
  • Prefect balance is achieved by symmetric design and high precision machining.
  • Industry exclusive interference thermal fit to eliminate high RPM slippage on the crankshaft.
  • Supplied with a brand new high quality ARP Racing bolt and precision ground flat washer
  • Micro V-Belt grooves are machined to exacting SAE J1459 specifications

Installation

Simple to install. Heat the pulley to 275/300oF (135/150oC) 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 MINI Cooper.

PROUDLY MADE IN THE USA

  • LOVE IT!!
    3

    Posted by Zero2sixty on Jun 29th 2023

    Bought this after an ALTA performance pulley failed , this is a much better design , lighter , looks great and quality is by far better ... paired with a performance supercharger pulley ... I have wine all day and don't get tipsy >>> :)

  • Awesome Product
    4

    Posted by TC Neal on Oct 6th 2019

    TC Neel and Andrew H. and I put on the crank pulley this weekend, it's Awesome. Thanks Again for all the help. You guys rock!!

  • Great quality
    5

    Posted by Td on Jun 29th 2023

    Was very surprised of the over all quality. This pulley was easy to install , no pullers needed, just heat from a conventional oven. The performance was a noticeable difference

  • Awesome Product
    5

    Posted by TC Neal on Jun 29th 2023

    TC Neel and Andrew H. and I put on the crank pulley this weekend, it's Awesome. Thanks Again for all the help. You guys rock!!

  • LOVE IT!!
    5

    Posted by Zero2sixty on Nov 11th 2018

    Bought this after an ALTA performance pulley failed , this is a much better design , lighter , looks great and quality is by far better ... paired with a performance supercharger pulley ... I have wine all day and don't get tipsy >>> :)

Need help? We're available at704-663-0094 - Email us atinfo@m7speed.com orlive help
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