✨Cylinder Works 270cc Big Bore Cylinder Kit – 21002-K01 – Unleash Your Yamaha Beast
Tired of being passed in the straight? Want a power boost without selling a kidney? The Cylinder Works Big Bore Kit (21002-K01) turns your 2001–2013 Yamaha YZ250F or WR250F into a 270cc trail-shredding, berm-busting weapon. No machining, no drama—just bolt it on and let it rip.
This kit isn’t some sketchy import. It’s made in the USA and built to OEM standards with performance upgrades baked in. The Vertex piston keeps things quiet and smooth, while the nickel silicon carbide plated cylinder adds serious durability. It even looks like stock—so only you and your roost will know it’s packing heat.
➡️ Why Go Big?
✔ 270cc of punch for more torque, more power, and more fun
✔ Vertex piston = better longevity and reduced engine noise
✔ Direct bolt-on—no machine work needed
✔ Complete kit: cylinder, piston, rings, pin, clips, gaskets
✔ OEM fit & finish
✔ USA made for riders who demand the best
Fitment:
- 2001–2013 Yamaha YZ250F
- 2001–2013 Yamaha WR250F
FAQ:
Q: Do I need to modify my cases or head?
A: Nope! This is a true bolt-on big bore kit—no machining required.
Q: Can I run my stock ECU and carb?
A: Absolutely. It’s designed for plug-and-play performance.
Q: Will this kit reduce engine life?
A: Not at all. In fact, the Vertex piston and high-quality plating increase reliability.
➡️ Don’t settle for stock—turn your YZ250F or WR250F into a 270cc powerhouse with Cylinder Works. More torque. More fun. Same bike. Bigger attitude.
Moto-House MX – Choice of Champions – Best Local Motocross Shop in Central Florida
Cylinder Specs:
- Compression Ratio -12.5:1
- Cylinder Diameter - 80 mm
- Cylinder Kit Type - Big Bore
- Displacement - 270 cc
- Engine Type4-Cycle
- Includes - Cylinder, Piston Kit, and Top-End Gasket Kit
- Size Over Standard Bore (3.00mm)
Cylinder Works Cylinders and Cylinder Kits
Moto-House MX - Choice of Champions - Located in Clermont/Groveland Fl. The best Motocross shop in Central Florida
Save
