Dune Goons 99mm Big Bore & PSR Tensioner Kit - Honda TRX450R (2006-2009)
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- Call us: 541-668-7503
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Big bore your TRX450R and fix the weak factory cam chain tensioner at the same time. The Cylinder Works 99mm kit comes with a Vertex 12.0:1 piston and top end gaskets, and the PSR billet manual tensioner replaces the stock automatic unit that is known to fail. Save 10% over buying them separately.
✓ Fits:
- 2006-2009 Honda TRX450R
✓ Features:
- Cylinder Works 99mm Ni-SiC plated big bore cylinder
- Vertex 12.0:1 forged piston kit and top end gasket set
- PSR billet manual cam chain tensioner stops timing chain rattle
- Replaces the failure-prone factory automatic tensioner
- 10% kit savings vs. buying each part on its own
✓ What's Included:
- (1) Cylinder Works 99mm Big Bore Kit (422-11005K): cylinder, Vertex piston kit, top end gaskets
- (1) PSR Billet Cam Chain Tensioner (581-32001)
Note: Valve stem seals are not included. Rejetting is required. The PSR tensioner is manual: set it per the instructions and check it during regular maintenance.
Ships fast from DuneGoonShop!
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
