Mitoos MXL z98 timing belt

Precise and backlash-free transmission: the Mitoos MXL z98 toothed belt

When the performance of a transmission system relies on the reliability of each component, the Mitoos MXL z98 toothed belt (ref. CXM498) responds with precision. Specifically designed to fit perfectly with the entire range of Mitoos toothed pulleys, this standardised MXL pitch belt ensures clean, consistent transmission without loss of traction even at high revolutions.

Technical specifications

• Number of teeth: 98
• Width: 2 mm
• Pitch: MXL (standardised pitch for high-precision transmission)
• Compatibility: Mitoos plastic toothed pulleys (ref. M136–M140) and Mitoos aluminium toothed pulleys (ref. M143–M149)

Function and performance

MXL pitch toothed belts are designed to replace direct drive systems or gears in applications where reducing noise, dampening torque spikes, and maintaining exact synchronisation between the motor shaft and the drive shaft are important. In the context of prepared slot cars, this type of belt transmission offers a smoother and more progressive response, especially appreciated in competition setups where consistency lap after lap makes a difference.

The MXL tooth design ensures there is no slipping between the belt and the pulley: each tooth engages precisely, transmitting rotation without losses even when the motor operates at high revolutions. The 2 mm width fits directly onto the Mitoos pulleys without the need for additional adjustments.

Compatibilities

This belt is validated to work with Mitoos toothed pulleys in both material versions:

• Plastic pulleys: references M136, M137, M138, M139, and M140.
• Aluminium pulleys: references M143, M144, M145, M146, M147, M148, and M149.

To achieve the best performance, it is important to always combine the belt with Mitoos pulleys from the same range, thus ensuring the correct pitch fit.

Installation and preparation

Installing an MXL toothed belt does not require special tools, but it is advisable to check the tension before starting the assembly. A belt that is too tight can cause unnecessary friction and premature wear; too loose will result in tooth skipping and loss of synchronisation. The optimal point is one where the belt has a slight controlled slack, without whining or vibration at cruising speed.

We recommend periodically inspecting the belt in competition setups, as heat build-up during long sessions can affect its elasticity. Carrying a spare unit in the pit box is good practice.

Frequently asked questions

Is this belt interchangeable with other MXL belts on the market?

The MXL pitch is a standardised specification, so the belt is dimensionally compatible with other MXL pulleys of the same width. However, Mitoos guarantees the optimal fit only with its own pulleys (M136–M140 and M143–M149).

When should I replace the belt?

It is advisable to replace it if cracks are visible on the back, there is visible wear on the teeth, excessive elongation, or if the assembly begins to transmit irregular vibrations. In competition, a preventive change after several days of intensive use is the best guarantee.

Can I use this belt with pulleys from other brands?

As long as the pulley from the other brand is MXL pitch and 2 mm wide, the dimensional compatibility should be correct. However, from Ministry of Hobby, we recommend validating the fit with a real test before using it in competition, as small manufacturing differences can affect the engagement.

Do plastic and aluminium pulleys offer the same performance with this belt?

Both offer good coupling with the CXM498. Aluminium pulleys tend to be stiffer and more durable under high-stress conditions, while plastic ones are a lighter and more economical option for recreational use or for beginners in preparation.

Is it sold in a pack or as a single unit?

The reference CXM498 corresponds to a single toothed belt. Please check the product sheet for updated information on the sales format.

The Mitoos MXL z98 toothed belt (CXM498) is a precision MXL-pitch drive belt featuring 98 teeth and a 2 mm width, designed for seamless compatibility with the full range of Mitoos toothed pulleys — both plastic (M136–M140) and aluminium (M143–M149). Ideal for slot car enthusiasts and competitive builders seeking smooth, high-rpm power transmission without slippage, this normalised belt delivers consistent performance lap after lap. A reliable upgrade for any belt-drive slot car build.