Cylinder Works Big Bore Power Valve Kit - Yamaha YZ250 (1999 - 2024) - Dune Goons
Cylinder Works Big Bore Power Valve Kit - Yamaha YZ250 (1999-2024)

Cylinder Works Big Bore Power Valve Kit - Yamaha YZ250 (1999-2024)

Regular price$394.95
/
Shipping calculated at checkout.

Cylinder Works Big Bore Power Valve Kit - Yamaha YZ250

Complete big bore power valve kit for your Yamaha YZ250 2-stroke. Designed for 72mm big bore cylinder applications. Includes power valve assembly and side boost valves. CNC-machined with hard anodized finish. Made in the USA.

What's Included

  • Cylinder Works CNC-machined power valve assembly
  • Side boost valves

Key Features

  • Designed for big bore 72mm cylinder applications
  • CNC-machined for precise fit and function
  • Hard anodized finish for durability
  • Complete kit with side boost valves included
  • Maintains peak 2-stroke performance in big bore setups
  • Made in the USA

Specifications

  • Bore Size: 72mm (big bore)
  • Displacement: 250cc
  • Engine Type: 2-Stroke
  • Material: Steel with hard anodized finish
  • Weight: 0.35 lbs

Fitment

Yamaha YZ250: 1999-2024 (with big bore cylinder)

Why Cylinder Works?

Cylinder Works is a trusted name in powersports engine components. Their power valves are CNC-machined in the USA to strict tolerances for precise operation and long-lasting performance.

📦 Shipping Information

In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch

Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks

Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.

Questions? Contact us—we respond within 24 hours.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Dune Goons Clothing

Dune Goons children's clothing in any color and any size with any logo. Just contact us for custom orders. We love people that wear Dune Goons!