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M7 Speed Overdrive Performance Pulley Kit (20 percent) 53-3M7700-20

$390.00
SKU:
53-3M7700-20
Weight:
2.00 LBS
Shipping:
Calculated at Checkout
M7 Speed Overdrive Performance Pulley Kit (20 percent) 53-3M7700-20

Description

Unlock the hidden power of your 2002–2006 MINI Cooper S (R53) with the M7 Speed Overdrive Performance Pulley Kit (20%). This complete upgrade bundle is engineered to increase your supercharger speed by 20% over stock, delivering noticeable improvements in low-RPM torque, throttle response, and overall driving excitement.

By combining M7’s precision-engineered 16% Supercharger Overdrive Pulley with a lightweight 4% Oversize Crank Pulley, this kit provides maximum efficiency and reliability under demanding conditions—whether on the street or track.

Kit Includes

  • M7 Speed 16% Supercharger Overdrive Pulley

  • M7 Speed 4% Lightweight Oversize Crank Pulley

  • Proper length Micro-V drive belt

  • ARP high-strength bolt & hardened washer

Supercharger Pulley Features (16% Reduction)

  • Machined to SAE-J1459 groove specs for precise belt fit and reduced slippage

  • Proprietary Taper-Loc shaft locking system for maximum grip and easy installation

  • Active cooling design with integrated ventilation holes to lower belt temperatures

  • Gold zinc-plated aircraft-grade billet steel for strength and corrosion resistance

  • Built-in pulley shoulders prevent belt walk during high RPM events

  • 100% balanced for vibration-free performance

Lightweight Crank Pulley Features (4% Oversize)

  • Precision CNC-machined and black anodized for durability

  • Weighs only 17 oz (1.06 lbs) to reduce rotational mass and improve engine response

  • SAE-J1459 machined grooves minimize belt slip under boost

  • Proven design with 20+ years of real-world track and road use

Performance Benefits

  • 20% faster supercharger speed for more boost and horsepower

  • Increased torque at lower RPMs

  • Improved throttle response and acceleration

  • Durable, slip-free operation under extreme conditions

  • Direct bolt-on upgrade with no permanent modifications

Fitment

  • 2002–2006 MINI Cooper S (R53, 1.6L Supercharged)

The M7 Speed Overdrive Performance Pulley Kit is the result of decades of MINI tuning expertise, delivering a perfectly matched system that maximizes power output while ensuring reliability and long service life.