DRT Cylinder Head Kit YAMAHA YZ250(X) 1999+

DRT cylinder heads are the cutting edge of cylinder head design, offering optimized performance for every riding style. Proudly designed and manufactured in the United States!

Fitment:

YAMAHA YZ250 1999+

YAMAHA YZ250X 2016+

CLICK HERE FOR INSTALL VIDEO!

Base Cylinder Head Kit Includes:

Head
Dome
O-Ring Kit (3 pieces)
Copper Washer Kit
Installation Instructions

Benefits compared to stock:

-Optimized performance: more power where you need it, when you need it

-Choose between 3 dome insert options. Order one, two, or all 3 to unlock full control over the feel of your engine. Each dome offers very different power delivery characteristics!

-Increased detonation resistance: more efficient combustion gains performance while also increasing reliability

-Better cooling: targeted heat removal where it’s most needed, giving further reliability gains

-Cleaner, more consistent jetting

-Reduced fuel consumption

Domes A through C are safe to run on 91+ octane (AKI) pump fuel. While each dome varies in compression ratio, they each have chamber geometry optimized for specific power delivery profiles. Please refer to the descriptions below to decide what will best suit you and your riding! Domes D and E provide the most peak power and require high octane fuel to prevent detonation. See specifications and power descriptions below.

Dome A (low compression/91+ octane): Mellow but very luggable low end with a linear feeling transition into a free-revving top end. The most friendly to ride but not lacking in torque or response. Great for beginner riders but plenty of fun for experienced riders too! Offers great control of traction in slick conditions. CLICK HERE FOR VIDEO REVIEW

Dome B (mid compression/91+ octane): Luggable low end with a quick ramp into strong top end pull. Slight torque increase with quicker revving and harder hitting power band compared to dome A. Classic “250 2 stroke” feel! For the rider that likes some spice when they get on the pipe! VIDEO REVIEW COMING SOON

Dome C (high compression/91+ octane): Hard hitting and luggable low end with a broad mid range. Offers the most low end torque and peak power. Snappy and "connected with throttle" feeling power . Yeah, this one pulls hard! CLICK HERE FOR VIDEO REVIEW

Dome D (high compression/100+ octane): Similar power curve to Dome C but MORE power across the rev range! 100+ octane required to prevent detonation.

Dome E (high compression/110+ octane): Similar power curve to Dome C/D but EVEN MORE power across the rev range! 110+ octane required to prevent detonation.

DRT and BeRAD Products strongly recommend hiring professional help for installation.

DRT and BeRAD Products are not responsible for any injury or damages resulting from use or installation of this product.

Return Policy: Returns of unused and undamaged items will be accepted within 30 days of the shipping date. When items are returned and inspected, a refund will be submitted, less the cost of shipping and a 20% restocking fee.

DRT Cylinder Heads Sticker 8"