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GYTR Ported Cylinder Head Assembly
GYTR Ported Cylinder Head Assembly

$ 1910.69 - $ 2149.16
10% Off - Save up to $238.79

Description See Also: 2 Reviews 7 Questions Fitment Part Numbers
Item #GYT000J

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2 Reviews
5 out of 5 stars
5 Star   2 4 Star   0 3 Star   0 2 Star   0 1 Star   0
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All Reviews
Big Piney, WY 83113, USA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Power 5/5 Style 5/5

Loved this performance mod. Living in the high country it really opens her up!!!!

Flagstaff, Az
Good deal

This head was way worth the money. i ceased my quad up and everything was done. replaced my old head with this and the ports are twice the size and the cams are quite a bit bigger. i have had power out of this that my quad never had i would recommend this product. i have dealt with mechanics who do their own porting and nothing i have had done made a difference like this did.

7 Questions
Answered:   7
Not Yet:   0
Q: If i put this on a 2017 yfz450r do i need to add anything to the bottom end of the motor or change
Over 6 months ago
Top 25
Over 6 months ago
A: this assembly does not fit your 2017 YFZ450R,
Q: Will this work on a 2012 yfz450
Over 10 months ago
Top 10 Contributor
Over 10 months ago
A: This will work with a 2012 Yamaha YFZ450R.
Q: Can I run nitrous to this head I’m running it to my stock head now and it been doing fine but can I run it to this head?
Over 10 months ago
Top 10 Contributor
Over 10 months ago
A: Gytr does not recommend the use on nitrous to this head.
Q: Will it fit the 2017 yfz450R?
1 year ago
Top 10 Contributor
1 year ago
A: Yes it will fit your 2017 Yamaha YFZ450R
Q: I have a 2012 YZ250F with the GYTR head kit and a Cylinder Works 270 big bore kit. Will 93 octane pump gas run fine with these mods?
Over 3 years ago
MotoSport Staff Expert
Over 3 years ago
A: For optimum performance a race gas would be recommended.
Q: I am putting a GYTR ported head and high Compression piston on my 2007 yz 450 but can not find any thing on jetting . I am at 500" above sea level.
Over 4 years ago
Top 1 Contributor
Over 4 years ago
A: There is not a specific setting I could give you for jetting your bike. It would really depend on your location (altitude/temperature) and how your bike is running with the current jetting. Jetting can be very tricky, there isn't one setting that will work everywhere with every bike. I would recommend taking your bike to a local motorcycle dealership’s service department to have your bike properly jetted.
Q: I have a gytr head but I need new valves, What valves does this head come with and what will fit when I replace them?
Over 5 years ago
valve seats and springs
Over 5 years ago
A: When I put this on my 2010 I used kibblewhite valve and springs. Does super awesome in bottom through top end rev.
MotoSport Staff
Over 5 years ago
A: This head uses stock OEM valves and springs. You can use any aftermarket valves and and springs in this head that would work with the stock head. The valve seats are a custom item and not available directly from Yamaha. Aftermarket valve seats are available or custom seats can be made by machine shops and installed also.

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See Fitments
# Part Numbers
Product Variant Manufacturer Part #
GYTR Ported Cylinder Head Assembly 17D-E11B0-V0-00
GYTR Ported Cylinder Head Assembly N/A
GYTR Ported Cylinder Head Assembly 1SLE11B0V000