CILOYU #35 Chain 140 Links Mini Bike Chain Tensioner for

The CILOYU #35 140-link chain with included mini bike chain tensioner is a complete replacement kit designed to restore proper drive alignment and smooth power delivery on CT100U, CC100X and DB30 mini bikes.

This kit brings together a full-length 140-link #35 roller chain, a rubber-and-metal tensioner, a chain breaker and an extra master link so you can replace a worn chain and set correct tension in one service session. Made from alloy steel with corrosion-resistant finishing and a low-friction guide on the tensioner, the package is tailored for popular small-displacement mini bikes with 79cc–100cc engines where a reliable, correctly-aligned drivetrain matters for safety and long life.

Which mini bike models will this chain and tensioner fit?

The CILOYU #35 chain kit is engineered for compact off-road and beginner mini bikes that use a #35 roller chain. It lists direct compatibility with Coleman Baja/Motovox and several Doodle Bug variants.

• Fitment: Coleman Powersports CT100U and CC100X mini bikes.
• Baja Motorsports Doodle Bug DB30 series (Blitz, Dirt Bug, Racer, Viper) compatibility.
• Motovox MBX10 and MBX11 compatible with #35 chain specification.

How does the tensioner improve chain life and performance?

The tensioner uses a rubber guide surface combined with a metal bracket to reduce metal-on-metal contact and dampen vibration. Proper tension alignment helps reduce premature wear and prevents the chain from derailing under load.

• Rubber guide reduces abrasive wear on chain rollers and sprockets.
• Adjustable bracket lets you set precise chain slack for smooth engagement.
• Prevents chain derailment and reduces vibration-induced noise.

What materials and durability features are included in the replacement chain?

The chain itself is constructed from alloy steel treated for enhanced wear and corrosion resistance, suitable for outdoor and off-road conditions. Its finished surfaces prolong service life compared to untreated chains.

• Alloy steel rollers, pins and plates for higher tensile life.
• Surface treatment provides improved corrosion and wear resistance.
• 140-link length gives flexibility for many sprocket and engine placements.

What tools and steps are needed for installation and adjustment?

The kit includes a chain breaker and an extra master link to simplify cutting to length and reconnecting the chain. After installation, alignment of sprocket and chain must be verified to avoid stress points.

• Use the included chain breaker to remove excess links to achieve correct length.
• Install the master link to reconnect the chain securely.
• Adjust the CILOYU tensioner and ensure sprockets and chain form a straight line.
• Re-check tension and alignment after a short test ride to confirm proper seating.

Who is this for: Riders, mechanics and owners of small-engine mini bikes who need a dependable #35 chain replacement and a practical tensioning solution. If you own a Coleman CT100U or CC100X, a Baja/Doodle Bug DB30 variant, or Motovox MBX10/MBX11 and want to replace a stretched or damaged chain with a kit that includes a tensioner, breaker and spare master link, this product gives a cost-effective, durable option engineered for those specific drive systems. It is also useful for DIY maintenance shops handling routine drivetrain servicing on 79–100cc mini bike platforms.