Inside The GYTR Yamaha YFZ450R Head
Doogie
- December 02 2008
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Last week we had quite a bit of news on the site about Yamaha’s hot new YFZ450R performance quad. In case you missed it, we rode the machine in SoCal for a couple of days during Yamaha’s media intro (and if you missed our impressions, click here). While we were at the event we met up with Philip Lash, who is Yamaha’s ATV and SxS Accessory Product Line Manager. We talked to Philip about the unique new high-performance head being offered through GYTR. Here’s what he had to say.
“The key point to make here is that GYTR accessories are integrated with the unit. In the past, or with other brands, customers purchase the unit then have to piece together different performance items that may or may not work well together. With the GYTR performance head assembly, the performance is optimized and works as a complete package with other GYTR items; be it piston, pipe, air filter, ECU, clutch components, etc.”
There’s no doubt that the head (in conjunction with the other engine mods) makes a huge difference in performance. Our test rider Dustin Terry took a machine with all the GYTR performance bolt-ons out on the track for an hour and when he came back in he was all smiles.
As for the head itself – here’s what you get.
GYTR PERFORMANCE HEAD
• CNC ported head comes fully assembled and ready to install, including Performance GYTR Cams (No costly; core charges, deposits, shipping charges or exchange programs)
• CNC milling ensures that every head is ported to the maximized design eliminating variances that hand porting supports
• Multiple angle valve jobs to optimize flow (radius on exhaust, 5 angle on intake).
• Developed by the Yamaha factory technicians, on the flow bench in conjunction with dyno and track testing with top level racers to ensure the ultimate in performance.
• Features: stock valve train and cam gears for superior durability and easy maintenance.
• The head will be run by factory ATV racer Dustin Nelson, (and Yamaha’s Motorcycle MX factory team, including James Stewart)
• Fits the 2009 YFZ450R
• $2,245.95
• Available, 1/1/09
GYTR CAMS
• Designed to maximize horsepower and torque in the mid-range and top-end without sacrificing any low-end power
• CNC ground to exact specifications using special cam grinding CNC machine.
• All billet alloy construction provides consistent machined surfaces for increased durability.
• Feature stock cam gears and auto de-comp for durability and dealer convenience
• No costly; core charges, deposits, shipping charges or exchange program
For more info, go to www.yamaha-motor.com
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