Which is YZ250F big bore kit-Athena vs cylinder works?
However, the kit upgrades your Yamaha YZ250F or WR250F to a 269cc engine. This is not a substantial difference, but it’s still an 8% increase in displacement, which will give you a nice boost in power. The Athena big bore kit is the single best modification you can do to your Yamaha 250 4 stroke to gain more usable power.
Is the Athena big bore gasket case boring?
Athena built a reliable cast piston that has been molybdenum-coated for high performance use and extended wear life. Includes a specially designed gasket kit to accommodate the big bore features. Each kit also includes easy-to-follow step-by-step installation instructions. Notes: Some kits will require case boring.
Is the Athena big bore kit 4 stroke?
Kits for 4-stroke applications do NOT include cylinder head. Image is for display purposes ONLY and may not represent actual product. Note: All Athena products which are manufactured with higher displacement and power than those permitted by law of the country where the end user lives are intended solely for competition-sports usage.
Can a Athena cylinder be used on a scooter?
Athena offers a wide range of cylinder kits for scooters and motorcycles with diameters and portings completely re-designed as original spare parts and / or specific boost to be used on tracks.
However, the kit upgrades your Yamaha YZ250F or WR250F to a 269cc engine. This is not a substantial difference, but it’s still an 8% increase in displacement, which will give you a nice boost in power. The Athena big bore kit is the single best modification you can do to your Yamaha 250 4 stroke to gain more usable power.
Are there any issues with the Athena 290?
Going to log my maintenance and issues with the Athena 290 kit for the wr250r here. No problems to date about to change oil again. I feel its pretty broken in at this point.
Where does the WR250R Athena 290 long term review?
But where the WR works superbly around here (Mendocino Nat. Forest) is in tight woods riding. As an X enduro rider, it reminds of my old 2 stroke race bikes. (250’s).
What’s the difference between a YZ250F cylinder and piston kit?
It’s a little over 500 dollars (sometimes less when on sale) for a complete new cylinder and piston kit. However, the kit upgrades your Yamaha YZ250F or WR250F to a 269cc engine. This is not a substantial difference, but it’s still an 8% increase in displacement, which will give you a nice boost in power.