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YZ 250-3
YZ250 Head-4
YZ250 Head-3
YZ250 Head-1
YZ 250 INstalled
YZ 250 Installed-2

YAMAHA YZ 250 2 STROKE PERFORMANCE

RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE 250cc AND 300cc HEADS!
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$345.00
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Description

YAMAHA YZ 250 2 STROKE PERFORMANCE

NOTE:  RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE 250cc  HEADS!

WE WILL OFFER A MONEY-BACK GUARANTEE 

If the head does not offer a performance increase over your stock head, we will refund your money!  NO RISK!

The RK Tek Head is UN-MATCHED in machining quality and performance!!

OUR heads WILL improve/widen the effective RPM Band GREATLY. TORQUE is increased at ALL RPM but our focus is, usually, directed to increase the lower and mid RPM torque. At no time will our heads give up top end performance or over-rev.

 

The Stock YZ 250 head is a VERY inefficient design and leaves A LOT of Performance on the table. It does not imploy a "working" Squish Band Design which is critical to proper combustion and higher torque output.

We have developed a TRUE Performance Enhancer with this Custom Billet Head designed specifically for mountains and single/dual  track riding. 

This head will widen the engine's effective power-band considerably and allow for a much more linear power delivery.

This head is unequaled in its performance.  Cooling is also increased. A cooler running engine will last longer and produce more power.

Testing has shown, in many cases, this head allows for the hill to be pulled in the next higher gear . What you would normally pull in 2nd gear you can now pull in 3rd gear.

We Also have VERY custom jetting specs that we recommend for your YZ250. Our calibration is MUCH different from what you read on the internet. You will be amazed at the difference once you install our proven set-up!

 

Porting Packages are also available. This will wake up the engine even more!

ANOTHER HUGE bonus with the addition of the head is improved fuel economy!

Most find they can run an extra 10-20 miles further on the same amount of fuel!! Now who doesn't need that???

PLEASE stay tuned to this site for updates!

 

When you have a narrow power-band (stock head) the higher gears are not very usable because the engine will not supply the needed torque at the lower RPM. So, you are forced to ride in the lower gears in order to maintain any torque.

After the head install, the torque is produced at a MUCH lower RPM than before. This allows for 1-2 gears HIGHER when in the slow and technical OR the heavy loaded hill pulls.
The higher gear running allows for faster overall speeds and less fatigue on the riders part because the rider does not have to "work" as hard to keep traction.
Almost all will find they are faster and in more control when running the higher gears. With this confidence increases as well.

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Don'f Forget to Send in Your OEM Heads !

If you are ordering cheater heads, we will need to have your OEM heads to make the modifications.  If you have any questions
call us anytime we're here to help.

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