Yamaha off-road motorcycle // sport atv gytr ported cylinder head assembly
Engine / performance
Head comes fully assembled and ready to install – no
costly core charges or deposits, or exchange programs that
can add to downtime. CNC milling ensures that every head
is ported to the maximized design eliminating variances
that hand porting can produce. Developed on the fl ow
bench in conjunction with dyno and track testing to ensure
the ultimate in performance and durability. Includes GYTR
Performance Camshaft Kit, and (for YZ250F application)
GYTR Valve Spring Kit. Also includes stock valve train and
cam gears for durability and easy maintenance. GYTR Head
Assemblies are used by Yamaha SX/ MX and ATV Race
Teams.Note: For maximum performance and protection, always use
Yamalube 15W-30 Full Synthetic Oil after installation – two quarts
are included with each GYTR Ported Cylinder Head Assembly.Note: This accessory affects emissions; installation on EPA-regulated 2006 or later WR models constitutes unlawful tampering except when used solely for closed-course
competition. YZ models are for closed-course use regardless of modification.
Note: This performance accessory does not meet California standard for off-road recreational vehicle usage regardless of model year.
Yamaha off-road motorcycle // sport atv gytr ported cylinder head assembly
Yamaha off-road motorcycle // sport atv gytr ported cylinder head assembly
