RZEOZU Mini Bike Chain Tensioner for Predator 212/224 — Adjustable Roller, Fits #35-420 Chains

The RZEOZU Universal Mini Bike Chain Tensioner is an adjustable roller tensioner that keeps drive chains aligned and tight on small engines like the Predator 212 and 224, fitting a range of chain sizes and popular mini bike models.

If you run a mini bike with a small horizontal engine (Predator 79cc, 212, 224, or compatible GX160/GX200 types) this tensioner replaces or upgrades factory hardware to prevent slack, reduce chain derailment, and prolong drivetrain life. It’s built with an adjustable bracket and roller so you can tune chain alignment across different frame layouts without buying a model-specific part.

Which engines and chain sizes does this tensioner work with?

This tensioner is designed to accept a broad set of small engines and chain types. It fits Predator 79cc, 212, 224, 196cc, and common Honda clone GX160/GX200 styles, and works with #35, #40, #41 and 420 chains used on many mini bikes.

• Compatible engines: Predator 79cc, 212, 224, 196cc, GX160, GX200.
• Accepted chains: #35, #40, #41, 420.
• Common models: Coleman Baja, Trailmaster, Motovox, Monster Moto, Baja Motorsports lines.

How do I mount the RZEOZU tensioner and avoid fitment issues?

Install the tensioner bracket first, then fit the clutch or sprocket assembly afterward to ensure proper chain path. If the chain runs very close to the rear wheel, the clutch may need to be reversed so the chain tracks straight and clears the wheel.

• Mount bracket to frame using one of seven hole positions to match your layout.
• Fit clutch/sprocket after bracket to check chain alignment and clearance.
• If needed, reverse clutch orientation when chain proximity to wheel is tight.

Can I use this tensioner with a jackshaft assembly or torque converter kit?

This tensioner is not compatible with jackshaft assemblies or torque converter clutch kits; it’s intended for direct chain runs and single-sprocket drivetrains. Using it alongside a jackshaft or torque converter will prevent correct installation and may interfere with rotation or clearance.

• Not compatible with jackshaft conversions.
• Do not use with torque converter or clutch kits that alter sprocket spacing.
• Designed for simpler chain paths on stock or similarly spaced setups.

What adjustment options and benefits does the bracket offer?

The bracket includes seven mounting holes so you can change roller position and tension without buying multiple adapters. This lets you tune chain slack and alignment precisely, reducing chain wear and the chance of derailment in varied frame or engine combinations.

• Seven-hole bracket gives multiple position choices for different bikes.
• Roller reduces friction and guides chain for cleaner power transfer.
• Adjustable design extends chain and sprocket service life when set correctly.

Who this is for: The RZEOZU Universal Mini Bike Chain Tensioner is aimed at mini bike owners, hobby mechanics, and garage builders who run Predator-style small engines or Honda-clone GX engines on Coleman, Baja, Motovox, Monster Moto and similar frames. It’s especially useful if you want a single, adjustable tensioner to cover several chain sizes without customizing a bespoke mount. Avoid this part if you’ve installed a jackshaft or torque-converter drivetrain; otherwise it’s a practical, low-cost upgrade to improve chain reliability and drivetrain longevity.