⟲ 360° — drag meThe facts.
| Brand | Bonamici Racing |
|---|---|
| Part Number | CHAD11 |
| Product Type | Chain tensioner |
| Material | CNC-machined aluminium |
| Fitment | Yamaha YZF-R1/M RN65 (2020-2026) |
| Mounting | Direct swingarm mount, no modifications required |
| Country of Manufacture | Italy |
DescriptionThe whole story▼
Keeping your chain slack dialled in is one of the simplest things you can do to extend drivetrain life and maintain consistent handling — and the Bonamici Racing chain tensioner CHAD11 makes that job genuinely effortless on the Yamaha YZF-R1/M RN65 (2020-2026). Machined from solid aluminium billet and built entirely in Italy, it delivers the kind of repeatable, micrometric adjustment that turns a fiddly workshop chore into a two-minute routine.
Key Features
- CNC-machined aluminium construction for exceptional rigidity and long-term durability under road and track stresses
- Micrometric adjustment positions let you set chain slack with pinpoint precision, protecting sprockets, chain and gearbox output shaft alike
- Mounts directly into the swingarm with no modifications required — a straightforward swap that any rider can complete at home
- Exact fitment engineered for the RN65 chassis, ensuring a secure, rattle-free installation every time
- 100% Made in Italy — manufactured to the exacting tolerances Bonamici Racing is known for on race circuits worldwide
- Available in five anodised colours so the tensioner complements your bike's livery rather than hiding under it
Everyday Usability and Long-Term Value
A poorly adjusted chain is one of the leading causes of premature wear across the entire rear drivetrain. The CHAD11 takes that risk off the table. Because each adjustment position is micrometric, you get the same result every service interval — no guesswork, no drift between the left and right sides. That consistency pays dividends whether you are commuting daily, heading to a track day, or preparing the R1M for a weekend canyon run. The direct swingarm mounting means the tensioner works with the geometry Yamaha engineered into the RN65 frame rather than against it, so chain tension remains stable under hard acceleration and through suspension travel.
Build Quality
Bonamici Racing produces this chain tensioner entirely in Italy, using CNC milling to hold tolerances that cast or stamped alternatives cannot match. The aluminium is anodised to resist corrosion and abrasion, while the finished surface is available in red, blue, gold, black or silver to suit personal preference. The result is a component that looks purposeful on the bike and lasts as long as the machine it is fitted to.
Fitment and Compatibility
The Bonamici Racing CHAD11 chain tensioner is designed exclusively for the following models:
- Yamaha YZF-R1 RN65 (2020-2026)
- Yamaha YZF-R1M RN65 (2020-2026)
Specifications
| Brand | Bonamici Racing |
|---|---|
| Part Number | CHAD11 |
| Product Type | Chain tensioner |
| Material | CNC-machined aluminium |
| Finish | Anodised (red, blue, gold, black, silver) |
| Fitment | Yamaha YZF-R1/M RN65 (2020-2026) |
| Mounting | Direct swingarm mount, no modifications required |
| Country of Manufacture | Italy |
FitmentWhich bikes this fits▼
- Yamaha YZF-R1/M RN65 (2020–2026)
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