Bonamici Racing Chain Tensioner for Aprilia RSV4 / RR / RF / 1100 Factory (2015-2020) CHAD04

Precision-engineered from CNC-milled aluminium in Italy, the Bonamici Racing chain tensioner CHAD04 raises the standard for drivetrain maintenance on the Aprilia RSV4 family. Micrometric adjustment positions give you exact, repeatable chain slack settings — the kind of control that makes a measurable difference whether you are setting up for the track or dialling in road manners.

Key Features

• CNC-milled aluminium construction delivers exceptional rigidity and resistance to wear, outlasting pressed-steel OEM alternatives with ease.
• Micrometric adjustment allows the chain slack to be set with surgical precision, eliminating the guesswork of coarse-increment tensioners.
• Supplied as a matched left-and-right pair, ensuring perfectly symmetrical swingarm alignment on every adjustment.
• Mounts solidly within the swingarm without requiring any modifications to the chassis — a clean, factory-grade installation.
• Available in five anodised finishes — red, blue, gold, black, and silver — so the tensioner complements rather than clashes with your RSV4 colour scheme.
• 100% Made in Italy under Bonamici Racing's exacting production standards.

Build Quality and Materials

The CHAD04 is machined from a solid billet of aluminium, a process that produces a far denser, more consistent grain structure than casting. Every surface is finished to tight tolerances so the tensioner seats flush in the swingarm pocket without play. The anodised surface treatment not only provides the colour but also adds a hardened layer that resists corrosion and abrasion across seasons of use. This is the level of finish you expect from a manufacturer that supplies components to racing teams, translated into a product you can fit to your road or track RSV4.

Micrometric Adjustment and Performance Benefit

Correct chain tension is one of the most frequently neglected maintenance items on a superbike, yet it directly influences rear wheel tracking, drivetrain efficiency, and swingarm pivot bearing life. The CHAD04's micrometric adjustment positions let you move the axle in fine, indexed increments rather than turning a bolt and hoping for the best. The result is that left and right tension can be matched exactly, wheel alignment stays true, and chain wear is distributed evenly — all of which feed back into sharper throttle response and more predictable handling.

Fitment and Compatibility

The CHAD04 is a direct, bolt-on replacement designed exclusively for the following Aprilia models:

• Aprilia RSV4 (2015-2020)
• Aprilia RSV4 RR (2015-2020)
• Aprilia RSV4 RF (2015-2020)
• Aprilia RSV4 1100 Factory (2015-2020)

No chassis modifications are required. The tensioner fits into the existing swingarm location using the standard mounting points.

Specifications

• Part number: CHAD04
• Brand: Bonamici Racing
• Material: CNC-milled aluminium
• Adjustment type: Micrometric
• Scope of delivery: 1x left chain tensioner, 1x right chain tensioner
• Available colours: Red, Blue, Gold, Black, Silver
• Origin: 100% Made in Italy