Bonamici Racing Chain Tensioner for Yamaha YZF-R6 RJ27 (2017-2026) CHAD07

Machined from solid aluminium billet and finished to the exacting standards Bonamici Racing are known for, the CHAD07 chain tensioner sets a new benchmark for precision and durability on the Yamaha YZF-R6 RJ27. Where OEM adjusters flex and wear, this Italian-engineered replacement mounts rigidly into the swingarm and holds its setting lap after lap, road mile after road mile.

Key Features

• CNC-milled aluminium construction delivers exceptional rigidity and corrosion resistance far beyond standard steel adjusters.
• Micrometric adjustment positions allow repeatable, ultra-precise chain slack settings, eliminating guesswork and improving drivetrain consistency.
• Solid swingarm mounting locks the tensioner in place under hard acceleration, preventing unwanted movement and preserving wheel alignment.
• Direct-fit design requires zero modifications to the swingarm or surrounding components — installation is straightforward and reversible.
• 100% Made in Italy, manufactured under the strict quality controls that define Bonamici Racing's track-proven component range.
• Available in anodised red, blue, gold, black, and silver to complement your R6's livery or personal style.

Build Quality and Materials

The CHAD07 begins as a solid block of high-grade aluminium, shaped entirely by CNC milling to tolerances that a cast or pressed part simply cannot match. Every surface is clean, every thread is precise, and every adjustment detent is consistent across the full range of travel. The anodised finish is not merely cosmetic — it hardens the surface against scratching, chain lube, and the general abuse a chain adjuster endures in daily use. This is the level of material quality you expect from a brand that supplies race teams competing at the highest level of circuit racing.

Micrometric Precision in Practice

Chain slack that drifts even a few millimetres affects throttle response, rear traction feel, and sprocket wear. The CHAD07's micrometric adjustment system means you can dial in the exact slack your gearing setup demands and return to that same setting after every chain service without relying on wear marks or estimation. On track, where consistent drivetrain behaviour underpins corner-exit confidence, that repeatability is genuinely valuable. On the road, it translates to even chain wear and a smoother power delivery across the entire rev range of the R6's high-revving inline-four.

Fitment and Compatibility

This chain tensioner is designed and manufactured specifically for the following motorcycle:

• Yamaha YZF-R6 RJ27 (2017–2026)

No swingarm modifications are required. The CHAD07 mounts directly using the existing fixing points for a clean, factory-correct installation.

Specifications