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M7 Speed Super Lightweight Crank Pulley - 7" Length
Part #: 53-3M7101-4
$167.15 For each
Free Shipping! *to continental U.S. only
Fits On:
02-06 Mini Cooper R53 Hardtop S / JCW, 05-08 Mini Cooper R52 Convertible S / JCW
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 forctory) 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 theThemA 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.Theme 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 orTheming 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.
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 forctory) 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 theThemA 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.Theme 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 orTheming 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.
Q: How do you install a pulley kit?
A: Pulley kits are installed using hand tools. First remove your factory belts (this is a good time to buy replacements), and then remove the bolts to take your factory pulleys off. Replace them with the lightweight, larger diameter pulleys.
Q: What are pulley kits? Why buy a pulley kit?
A: Pulleys are what drive your vehicles power steering, alternator and air conditioning unit. Belts attach to these pulleys and keep all the units running smoothly. By increasing the diameter of these pulleys, you slow down the power steering, alternator and air conditioning unit, reducing the amount of energy needed to drive them. Horsepower gains can be realized with a simple install package that has no recorded effect on emission levels. Beyond that, pulley kits often come in custom finishes, such as polished or anodized, and give your engine bay a clean custom look.
Q: What exactly is included in a pulley kit?
A: Pulley kits are car specific, and depend of whether you have power steering and/or air conditioning. The basic pulley set includes pulleys for power steering, alternator and air conditioning as needed, as sometimes come pulley belts (see the product description on our website to be sure).
A: Pulley kits are installed using hand tools. First remove your factory belts (this is a good time to buy replacements), and then remove the bolts to take your factory pulleys off. Replace them with the lightweight, larger diameter pulleys.
Q: What are pulley kits? Why buy a pulley kit?
A: Pulleys are what drive your vehicles power steering, alternator and air conditioning unit. Belts attach to these pulleys and keep all the units running smoothly. By increasing the diameter of these pulleys, you slow down the power steering, alternator and air conditioning unit, reducing the amount of energy needed to drive them. Horsepower gains can be realized with a simple install package that has no recorded effect on emission levels. Beyond that, pulley kits often come in custom finishes, such as polished or anodized, and give your engine bay a clean custom look.
Q: What exactly is included in a pulley kit?
A: Pulley kits are car specific, and depend of whether you have power steering and/or air conditioning. The basic pulley set includes pulleys for power steering, alternator and air conditioning as needed, as sometimes come pulley belts (see the product description on our website to be sure).
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