This aftermarket cam timing chain guide and tensioner blade set is a replacement for the Honda XR250 Tornado and CBX250 Twister 250 cc engines. It guides and tensions the cam chain to reduce vibration and rattling, helping prevent the chain from jumping teeth and disrupting valve timing. The set is intended for engine repair or overhaul.

Features

• Direct bolt-on replacement; no modification required.
• Wear-resistant friction surfaces help reduce timing chain wear.
• Mounting hole positions are dimensionally checked against the original parts.
• Replacing worn blades can help address timing chain ticking or rattling and reduce the risk of damage to the cylinder head and valve assembly.

Specifications

• Material: High-strength composite plastic with a wear-resistant friction layer.
• Temperature resistance: High-temperature resistant.

Cross-Reference OEM Part Numbers

• Cam chain guide blade: 14511-KPF-900
• Cam chain tensioner blade: 14520-KPF-911

Vehicle Fitments

HONDA

• XR250 Tornado (2001–2008)
• CBX250 Twister (years not specified)

Not suitable for the XR250R or XR250L with the KCZ engine; these use a different engine. Compare the shape of your original parts and their OEM numbers before ordering.

Kit Contents

• 1 × cam chain guide blade
• 1 × cam chain tensioner blade

Installation Guidance

• Professional mechanic installation is recommended.
• If the timing chain has stretched, replace it alongside the blades.
• Check the engine timing marks after assembly.
• Regular engine oil changes can help extend the service life of the chain and guide blades.