CNC Racing chain adjuster set – Aprilia RS 660 (2025+)
- Small detail, big effect: sleek CNC design that immediately catches the eye
- Direct replacement for the standard chain adjusters – fits without modifications
- CNC-machined from Ergal 7075, high-quality anodised finish (black or red)
- Clear reference marks for precise alignment
- Optionally combine with the DA404 rear axle nut for a complete look
- Price per set L+R
Not the first part you think of replacing… until you see them. These chain adjusters give the swingarm of your RS 660 a clean, high-end accent that visually elevates the entire rear wheel. Exactly the kind of upgrade that makes you think: “that’s the finishing touch.” In addition to their attractive finish, they are functional and solidly made thanks to precise CNC machining and Ergal 7075.
Technical details
The set replaces the OEM chain adjusters (2B008847 and 2B008848) directly and uses the original mounting points. CNC-machined from lightweight and strong Ergal 7075, then anodised for lasting colour depth. Available in black or red. Installation by a qualified specialist is recommended; follow the workshop manual for chain slack, wheel alignment and torque values. Anodised parts: clean with a neutral product, not acidic/alkaline degreasers and not with a pressure washer.
Great to combine
Complete the look with the DA404 rear axle nut for a consistent, premium appearance around the rear axle (search for DA404).
Frequently asked questions
Is this mainly an aesthetic upgrade?
Yes, the emphasis is on the sleek finish and visible quality. Thanks to the machined Ergal, you get precise operation and a solid feel.
Can I install this myself?
The fit is plug-in, but correct chain tension and alignment are crucial. Use a torque wrench and carefully check the alignment after installation.
How do I maintain the finish?
Use lukewarm water and a neutral soap; avoid aggressive degreasers and pressure washers to keep the anodised finish looking its best.