VALVE EXHAUST YFM660, PROX 28.2661-1 3YF-12121-00
4.1 Trustpilot 99.9% positive on eBay
UK delivery £4.99, free over £60 2–4 business days
Spread the cost with 
18+, T&Cs apply
PROX Hi-Performance Racing Valve Exhaust. Made from STAINLESS STEEL. Head Diameter: 32.00mm. Stem Diameter: 6.00mm. Stem Length: 92.70mm. Prox offers steel and titanium engine valves. ProX steel valves are manufactured from premium grade steel to exact OEM specifications and tolerances. Made by leading OEM factories in Japan. Part number 28.2661-1.
- SKU
- 65-152.EX.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (3)
Fitments (55)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YFM 660 Grizzly | 2002 |
| YAMAHA | YFM 660 Grizzly | 2003 |
| YAMAHA | YFM 660 Grizzly | 2004 |
| YAMAHA | YFM 660 Grizzly | 2005 |
| YAMAHA | YFM 660 Grizzly | 2006 |
| YAMAHA | YFM 660 Grizzly | 2007 |
| YAMAHA | YFM 660 Grizzly | 2008 |
| YAMAHA | YFM 660 Raptor | 2001 |
| YAMAHA | YFM 660 Raptor | 2002 |
| YAMAHA | YFM 660 Raptor | 2003 |
| YAMAHA | YFM 660 Raptor | 2004 |
| YAMAHA | YFM 660 Raptor | 2005 |
| YAMAHA | YFM F GRIZZLY 660 | 2002 |
| YAMAHA | YFM F GRIZZLY 660 | 2003 |
| YAMAHA | YFM F GRIZZLY 660 | 2004 |
| YAMAHA | YFM F GRIZZLY 660 | 2005 |
| YAMAHA | YFM F GRIZZLY 660 | 2006 |
| YAMAHA | YFM F GRIZZLY 660 | 2007 |
| YAMAHA | YFM F GRIZZLY 660 | 2008 |
| YAMAHA | YFM GRIZZLY 600 | 2002 |
| YAMAHA | YFM GRIZZLY 600 | 2003 |
| YAMAHA | YFM GRIZZLY 600 | 2004 |
| YAMAHA | YFM GRIZZLY 600 | 2005 |
| YAMAHA | YFM GRIZZLY 600 | 2006 |
| YAMAHA | YFM GRIZZLY 600 | 2007 |
| YAMAHA | YFM GRIZZLY 600 | 2008 |
| YAMAHA | YFM GRIZZLY 660 | 2002 |
| YAMAHA | YFM GRIZZLY 660 | 2003 |
| YAMAHA | YFM GRIZZLY 660 | 2004 |
| YAMAHA | YFM GRIZZLY 660 | 2005 |
| YAMAHA | YFM GRIZZLY 660 | 2006 |
| YAMAHA | YFM GRIZZLY 660 | 2007 |
| YAMAHA | YFM GRIZZLY 660 | 2008 |
| YAMAHA | YFM R RAPTOR 660 | 2001 |
| YAMAHA | YFM R RAPTOR 660 | 2002 |
| YAMAHA | YFM R RAPTOR 660 | 2003 |
| YAMAHA | YFM R RAPTOR 660 | 2004 |
| YAMAHA | YFM R RAPTOR 660 | 2005 |
| YAMAHA | YFM RAPTOR 660 | 2001 |
| YAMAHA | YFM RAPTOR 660 | 2002 |
| YAMAHA | YFM RAPTOR 660 | 2003 |
| YAMAHA | YFM RAPTOR 660 | 2004 |
| YAMAHA | YFM RAPTOR 660 | 2005 |
| YAMAHA | YXR 660 Rhino | 2004 |
| YAMAHA | YXR 660 Rhino | 2005 |
| YAMAHA | YXR 660 Rhino | 2006 |
| YAMAHA | YXR 660 Rhino | 2007 |
| YAMAHA | YXR RHINO 600 | 2004 |
| YAMAHA | YXR RHINO 600 | 2005 |
| YAMAHA | YXR RHINO 600 | 2006 |
| YAMAHA | YXR RHINO 600 | 2007 |
| YAMAHA | YXR RHINO 660 | 2004 |
| YAMAHA | YXR RHINO 660 | 2005 |
| YAMAHA | YXR RHINO 660 | 2006 |
| YAMAHA | YXR RHINO 660 | 2007 |
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve - Exhaust
- Variant Id
- 263492
FULL DESCRIPTION
Pro-X Racing Stainless Steel Exhaust Valve
This Pro-X Racing Exhaust Valve is constructed from high-quality stainless steel, designed for high-performance applications. It meets exact OEM specifications and tolerances, providing a reliable and cost-effective replacement for your engine.
- Material: Premium Grade Stainless Steel
- Head Diameter: 32.00mm
- Stem Diameter: 6.00mm
- Stem Length: 92.70mm
- Manufacturing: Made by leading OEM factories in Japan
Pro-X offers a comprehensive range of engine valves, including steel and titanium options, as well as titanium to steel conversion kits. Their titanium valves are forged from a high-tech Ti3Al alloy for superior strength and performance at high temperatures. Some Pro-X titanium valves feature a CrN coating for extreme surface hardness and reduced friction, often exceeding original equipment specifications in dimensions and reliability.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.