Cylinder Works 51001-K01 90 mm Big Bore Kit - KTM 350 SX-F/XC-F 2011-2012

Enhance your KTM 350 with the Cylinder Works 51001-K01 Big Bore Cylinder Kit, a direct bolt-on upgrade boosting performance to 365 cc. This kit includes a 90.00 mm cylinder, Vertex piston, and top-end gaskets, perfect for 2011-2012 SX-F and XC-F models.

✓ Fits:

• KTM:
• 2011-2012 350 SX-F
• 2011-2012 350 XC-F

✓ Features:

• Direct bolt-on big bore cylinder with +2.00 mm overbore; no machine work required
• Nickel-silicon carbide-plated cylinder sleeve for enhanced durability and long life
• Includes matched Vertex pistons for longevity, performance, and reduced engine noise
• Virtually identical appearance to OEM cylinders
• Made in the U.S.A.
• Compatible with 90.00 mm bore and 365 cc displacement
• 13.5:1 compression ratio, 4-cycle engine

✓ What's Included:

• Cylinder Works Big Bore Cylinder (51001-K01)
• Vertex Piston Kit (piston, rings, pin, clips)
• Top-End Gasket Kit
• Installation-ready, direct bolt-on design
• No additional hardware included (uses existing hardware)

✓ Specs:

• 6.57" (H) × 11.53" (L) × 8.62" (W)
• Availability: In stock. Ships next business day

Note: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Note: Always verify fitment by year, make, model, and engine specifications before ordering. Replaces OEM part number: 77230138000.

Note: Torque cylinder head bolts to KTM specs (~25-30 ft-lbs, consult manual).

Note: Re-jet carburetor (e.g., Keihin PWK 35mm) for increased displacement - start with richer mains (e.g., 165-170).

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