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Cylinder Works

Cylinder Works 16-18 Yamaha WR 450 F 450cc Big Bore Cylinder 99mm

$555.95 $528.15 Save $27.80

SKU: C0BU 21005-1

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Cylinder Works 21005-1 is a new cast aluminum big bore cylinder with a Nickel Silicon Carbide (NSC) electroplate bore for increased horsepower and engine displacement. It offers a true bolt-on application without further modifications and has a 99mm cylinder diameter.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCylinder Works
Part NumberC0BU 21005-1

Videos

Cylinder Works Big Bore Cylinder Kit

Cylinder Works Big Bore Cylinder Kit
YFZ YZ YFZR 450 big bore cylinder tips

YFZ YZ YFZR 450 big bore cylinder tips
Finished bike build. 08 yz450f big bore yz478f

Finished bike build. 08 yz450f big bore yz478f
Big Bore Yz450f

Big Bore Yz450f
How to install a YFZ450 Cylinder (98mm big bore)

How to install a YFZ450 Cylinder (98mm big bore)
Suzuki DRZ400E Big Bore Kit Review || Cylinder Works 434cc

Suzuki DRZ400E Big Bore Kit Review || Cylinder Works 434cc

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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