This is the COMPAK 4 Pro B10 Steel Clutch for 1/8 off-road cars, a fully adjustable 4-shoe clutch that redefines the concept of an adjustable clutch. It features a unique adjustment system that allows you to change the clutch engagement without removing the engine, with the car fully assembled and ready to run.

The COMPAK concept, just like its predecessor, refers to clutches that are installed on the engine fully assembled.

Smoother Acceleration and Greater Stability

Thanks to the increased weight of the assembly (13 g heavier than the lightweight version: 22 g in steel compared to 9 g in aluminium), this clutch offers key advantages on the track:

• Smoother acceleration: Ideal for bumpy, rough or low-grip tracks.

• Optimized cornering: Makes it easier and more intuitive to maintain speed through corners.

• More stable idle: Its greater rotating mass provides more consistent and stable engine behaviour.

Adjustment in Seconds

Simply turn the car over, lock the flywheel and move the adjuster to the desired position. You can choose between three clutch stiffness levels (I, II, III), laser-etched directly onto the flywheel. This innovative system minimizes the time required to adjust the clutch.

Position "I" corresponds to the softest setting and the assembly position, while "III" provides the highest clutch stiffness. To check the selected setting, simply see which number is aligned with the adjustment hole in the adjuster.

Universal System and Compatibility

The 33 mm flywheel has been carefully designed to ensure compatibility with most brands on the market. The assembly has also been specifically designed for a precise fit with ULTIMATE clutch bells. Note: Other clutch bells available on the market may not be compatible with this clutch.

Simple and Intuitive Assembly

Thanks to its innovative design, assembling the COMPAK is as easy as pressing the springs with your fingers until they reach the assembly position. A quick and practical solution for drivers looking for simplicity without compromising performance.

Extended Component Life

The springs can be relaxed by placing them in the I assembly position after each training session or race day. This helps prevent deformation over time, extending component life and ensuring consistent performance race after race.

Aluminium Shoes with Wear Indicator

The four aluminium clutch shoes feature a linear groove that acts as a visual wear indicator. When wear has erased this mark, it is time to replace the shoes, ensuring that traction and reliability are never compromised. It is recommended to replace the springs together with the shoes to maintain the optimum balance of the clutch system.

Weight Specifications

• Aluminium version weight: 9 g

• Steel version weight: 22 g

• Difference: +13 g

COMPAK Package Contents

• 4 aluminium clutch shoes

• 4 springs

• 1 black anodized steel flywheel with laser engraving

• 1 retaining nut

• 1 high-precision aluminium adjuster

• 1 red anodized aluminium cover