Cylinder Works 13-15 KTM 350 SX-F 350cc +2mm Big Bore Cylinder Kit 366cc 13.5:1 Comp. 90mm

Name: Cylinder Works 13-15 KTM 350 SX-F 350cc +2mm Big Bore Cylinder Kit 366cc 13.5:1 Comp. 90mm
Brand: Cylinder Works
SKU: C0BU 51003-K01
Price: 933.80 USD
Availability: InStock

$982.95 $933.80 Save $49.15

SKU: C0BU 51003-K01

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Ships in 4–6 weeks

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Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

The Cylinder Works Big Bore Cylinder Kit (51003-K01) is a ready-to-install, direct bolt-on cylinder kit that requires no re-plating. It comes complete with a cylinder, a matched Vertex piston, rings, pin, clips, and a top-end gasket kit for a complete top-end rebuild. The cylinder is Nickel Silicon Carbide plated for long life, and the bore is honed to the exact bore size for easy piston installation. No special machining is required as it is a bolt-on kit. This kit provides a +3mm big bore, resulting in a 727cc final engine displacement and a 9.2:1 compression ratio.

Fitment

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

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Specifications

Brand	Cylinder Works
Part Number	C0BU 51003-K01

Videos

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Cylinder Works Big Bore Cylinder Kit

Cylinder Works-Big Bore Kit

Big bore part 2

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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