S&M Twitchfork 15mm Offset Fork

S&M Twitchfork 15mm Offset Fork

The S&M Twitchfork is a short-offset fork engineered for technical street and flatland riding. With an ultra-responsive 15mm offset, this fork shortens the overall wheelbase and quickens steering response, making nose manuals, barspins, and spinning tricks easier to initiate and control. Built from heat-treated 4130 chromoly with tapered, double-butted legs and made in the USA.

Key Features

• 15mm offset – extremely short rake reduces wheelbase length and increases front-end responsiveness, making the bike easier to manual, spin, and control during technical tricks
• Double-butted, tapered legs – tubes transition from 1.25″ at the crown to 0.875″ at the dropouts, removing excess material for weight savings while maintaining strength at high-stress areas
• Wrap-around dropouts with mitered caps – laser-cut dropouts feature mitered and capped ends that provide maximum peg clearance without interference during grinds
• Large-diameter leg bends – wider fork crown radius accommodates larger tires without rubbing, supporting tire sizes up to 2.4″ or wider
• One-piece CNC-machined steerer tube – integrated bearing race eliminates pressed cups and includes an extruded 6061 aluminum insert for added strength where the steerer meets the crown
• M24 x 1.5 compression threading – threaded top cap compression system provides precise preload adjustment with a 6mm Allen key
• Made in USA – manufactured domestically by S&M with 4-quadrant post-weld heat treatment for consistent quality and strength

Technical Specifications

• Wheel size: 20″
• Legs: Double-butted, tapered 1.25″ to 0.875″, 4130 chromoly
• Dropouts: Precision laser-cut 3/8″ slots, mitered and capped
• Steerer tube: One-piece CNC-machined 4130 chromoly with integrated race and 6061 aluminum insert
• Steerer tube length: 166mm
• Compression: M24 x 1.5 threaded, 6mm Allen slot
• Axle-to-crown height: 320mm
• Offset: 15mm
• Weight: 2.00 lbs (0.91 kg)
• Heat treatment: 4-quadrant baked post-weld
• Country of origin: USA

Compatibility and Ideal Use

This fork requires an integrated headset and uses 3/8″ front axle dropouts. The M24 x 1.5 threaded compression system is compatible with most modern top cap compression setups. The extremely short 15mm offset creates very quick, twitchy handling—not ideal for riders who prefer stability for jumping, trails, or high-speed riding. Best suited for technical street riders and flatland riders who prioritize maneuverability, quick steering response, and precise bike control for nose manuals, barspins, tailwhips, and spinning tricks. The short offset makes the bike feel more responsive but less stable at speed or when landing from height.