Cylinder Works Big Bore Cylinder Kit 90mm 366cc - KTM 350 SX-F / 350 XC-F / Husqvarna FC350 (2016-2018)
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Cylinder Works Big Bore Cylinder Kit 90mm - KTM 350 SX-F / 350 XC-F / Husqvarna FC350
Take your 350 from 350cc to 366cc with this complete big bore cylinder kit. The +2mm overbore delivers noticeable power gains throughout the RPM range. Includes Vertex matched piston, Nikasil plated cylinder, and full gasket kit. Direct bolt-on with no machine work required. Made in the USA.
What's Included
- Cylinder Works 90mm big bore cylinder
- Vertex matched piston
- Piston rings
- Wrist pin and clips
- Complete top end gasket kit
Key Features
Big bore design increases displacement from 350cc to 366cc. Nikasil plated cylinder for long life and excellent heat transfer. Vertex piston ensures longevity and reduced engine noise. Looks virtually identical to OEM. Direct bolt-on installation with no machine work required.
Specifications
- Bore Size: 90mm (+2mm overbore)
- Displacement: 366cc
- Compression Ratio: 14.0:1
- Engine Type: 4-Stroke
- Material: Cast Aluminum with Nikasil plating
- Weight: 3.45 lbs
Fitment
KTM:
- 350 SX-F: 2016-2018
- 350 XC-F: 2016-2018
Husqvarna:
- FC350: 2016-2018
Why Cylinder Works?
Cylinder Works is a trusted name in powersports engine components. Their cylinders and kits are manufactured in the USA to strict tolerances. Used by professional racers and weekend riders who demand reliability.
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
