Rolon Chain Sprocket Kit (X-Ring) for Jawa Standard & Jawa 42 - Part No. KIT-HPXR-288 (520-98L / 13T / 45T)

High-Performance X-Ring Seal Technology: Advanced X-ring configuration traps synthetic lubricant inside the pins while blocking abrasive dust, mud, and water.

Precision Pitch and Tooth Geometry: Built to exact 520-98L dimensions with a 13-tooth front and 45-tooth (5-hole) rear sprocket layout for factory gear matching.

Case & Induction Hardened Sprockets: Surface-hardened teeth resist hook wear, elongation shock, and premature profiling degradation under acceleration.

High-Tensile Alloy Steel Pins: Engineered to withstand high shock loads without stretching or fatigue cracking.

Direct OEM Fitment: Designed for straightforward installation on Jawa Standard and Jawa 42 setups utilizing the 5H rear hub configuration.

Celebrate the timeless retro character of your classic single-cylinder cruiser while enjoying modern, high-tensile durability with the Rolon Chain Sprocket Kit (X-Ring) for Jawa Standard and Jawa 42 (Part No. KIT-HPXR-288). Engineered to handle the distinct torque pulses of classic-modern Jawa platforms, this 520-pitch X-ring chain and precision-hardened sprocket set delivers silent power transfer, reduced friction, and extended service intervals. Whether you're commuting through city traffic or cruising open highways, this kit ensures your power reaches the rear wheel with refined efficiency.

Worn chains cause surging, chain slap against the swingarm, and rapid tooth destruction on your sprockets. Upgrading to the Rolon KIT-HPXR-288 X-ring kit restores butter-smooth power delivery, minimizes maintenance frequency, and protects your retro ride's drivetrain integrity.

Recognizing Drivetrain Wear and Replacement Triggers

Stiff or Kinked Links: Individual chain links failing to articulate smoothly over the sprockets indicate internal X-ring failure and corrosion.

Shark-Toothed or Hooked Rear Sprocket Teeth: 45T rear teeth leaning or thinning into sharp points mean the sprocket can no longer seat rollers evenly.

Excessive Slack Rebound & Slapping: Constant need for chain tightening combined with loud rhythmic slapping against the swingarm rubber guard under deceleration.

Surging Throttle Response: Micro-delays or jerky lurches when rolling on throttle due to pitch mismatch between stretched chain pitches and sprocket valleys.

Maintenance & Installation Best Practices

Complete Kit Replacement Rule: Always replace the 13T front, 45T rear, and 520-98L X-ring chain together as kit KIT-HPXR-288 to prevent accelerated wear from mismatched tooth/roller wear.

Alignment Precision: Use rear axle alignment markers and laser/string alignment checks to ensure zero side-load friction on the X-ring side plates.

X-Ring Safe Care: Clean using kerosene or specialized O/X-ring safe chain cleaner brushes, and re-lube with quality X-ring chain lube every 500 km or post-monsoon rides; avoid high-pressure water jet direct hits on chain seals.