Mitoos MXL z55 timing belt

Direct transmission by toothed belt for 1/32 slot: Mitoos MXL z55

The Mitoos MXL z55 toothed belt (reference CXM455) is a transmission replacement part specifically designed for 1/32 slot car setups that use toothed pulleys. With a standard tooth pitch of MXL, 55 teeth, and a width of 2 mm, this component replaces traditional rubber bands with a mechanical solution that offers greater precision and durability.

Function and performance

Unlike a rubber band, the toothed belt works positively: each tooth engages with the pulley without the possibility of slipping. This translates into several direct advantages on the track:

• Linear acceleration: the motor's power reaches the rear axle intact from the very first moment, without elastic absorption.
• More defined braking: with no play or slipping, the response to power cut is immediate and predictable.
• Quiet running: the calibrated flexibility of the belt dampens mechanical vibrations without sacrificing rigidity in the transmission.
• No stretching: the manufacturing materials withstand long competition sessions without deforming or losing tension.

Compatibility and installation

As it is an MXL profile with 55 teeth, this belt is compatible with the range of MXL toothed pulleys from the Mitoos catalogue and with any other fine pitch transmission system on the market that shares this standard. The 2 mm width facilitates its accommodation in compact chassis where lateral space is limited, a detail that modelers of raid, rally, or GT in 1/32 scale will appreciate.

Installation does not require special tools: simply place the belt over both pulleys while respecting the working tension recommended by the manufacturer to avoid both loosening and overtension, which would accelerate bearing wear.

Preparation and common mistakes

Although installation is straightforward, there are some points to keep in mind:

• Proper tension: a belt that is too tight loads the bearings of the axle and motor; too loose may skip during hard braking. Adjust until there is a slight flex in the free section.
• Pulley alignment: ensure that both pulleys are perfectly aligned in the same plane. Lateral misalignment causes premature wear on the sides of the teeth.
• Clean section: avoid the presence of oil or lubricant in the belt area; MXL teeth do not require lubrication and excess product can degrade the material.
• Periodic inspection: although durability is high, it is advisable to inspect the teeth after intense sessions to detect any signs of cracking before it affects performance.

Frequently asked questions

Is this belt compatible with pulleys from other brands besides Mitoos?

Yes. Being a standard MXL profile with 55 teeth, it is compatible with any toothed pulley of MXL pitch in the 1/32 slot market, regardless of the brand, as long as the pulley width is equal to or less than 2 mm.

What advantage does it offer over a conventional rubber band?

The toothed belt eliminates slipping and the progressive stretching of rubber bands. The response in both acceleration and braking is more direct and repeatable, which is especially noticeable in club racing and in raid or rally setups that require reliability during long sessions.

Do I need any special tools for installation?

No. Installation is done by hand by placing the belt over the pulleys. The most important thing is to correctly adjust the axle distance to achieve the proper tension before securing the motor or chassis in its final position.

How often should I replace it?

It depends on usage. Under normal club racing conditions, it can last many sessions without visible degradation. It is recommended to inspect it periodically and replace it if cracks appear in the teeth, deformations, or loss of tension that cannot be corrected by adjusting the chassis.

Can I use lubricant on the belt?

No. MXL toothed belt transmission systems do not require lubrication. Applying oil or grease in the contact area can degrade the belt material and reduce its lifespan.

The Mitoos MXL z55 toothed belt (ref. CXM455) is a precision 1/32 slot car replacement part designed for pulley-driven transmission systems. With a standard MXL tooth profile, 55 teeth and a 2 mm width, it delivers direct power transfer, instant braking response and vibration-free running without the stretch or slip associated with traditional rubber bands. Compatible with MXL pulleys from Mitoos and other slot car brands, it is an ideal upgrade for raid, rally and GT builds requiring consistent and reliable drivetrain performance.