FSA V-Drive MTB Stem – 80mm, 31.8 Clamp, +/-17°, 1-1/8"

The FSA V-Drive MTB Stem is a durable, no-nonsense cockpit upgrade designed for mountain and trail bikes. With a 3D forged and CNC-machined aluminum body, it delivers reliable stiffness and fit adjustment through a reversible +/-17° angle. Key Functional Details 80mm stem length for balanced MTB cockpit positioning +/-17° reversible angle for fit tuning (rise or drop) 31.8mm handlebar clamp (modern standard) 1-1/8" steerer tube compatibility 3D forged and CNC machined AL6061/T6 aluminum body 4-bolt faceplate for secure handlebar clamping Chromoly hardware for durability 40mm stack height at steerer clamp Technical Specifications Brand FSA (Full Speed Ahead) Model V-Drive MTB Stem Length 80mm Bar Clamp Diameter 31.8mm Steerer Tube Diameter 1-1/8" Angle +/-17° Material AL6061/T6 Aluminum Stack Height 40mm Hardware Chromoly Color Black UPC 840031054111 Compatibility & Technical Notes Good Fit: Mountain, trail, and hybrid bikes with 1-1/8" threadless steerers Handlebars with 31.8mm clamp diameter Riders adjusting reach or stack height with stem angle flip Not A Fit: 35mm handlebar clamp systems (incompatible) Older 25.4mm or 26.0mm handlebars Tapered steerer confusion (this fits the top 1-1/8" section only, which is standard) This stem uses the modern 31.8mm handlebar standard and fits standard threadless headsets with a 1-1/8" steerer. Service / Ownership Context Installation requires proper torque on both steerer clamp bolts and faceplate bolts. Always tighten in a cross-pattern and follow torque specs to avoid bar slippage or damage. Angle can be flipped during install to raise or lower handlebar position. Fit & Use Signals Good for riders dialing in fit on MTB or hybrid bikes Useful for increasing comfort (positive rise) or aggressive positioning (negative drop) Common replacement for OEM stems on entry to mid-level bikes Biggest issue is clamp mismatch—customers often don’t know if they have 31.8 or 35mm bars. Verify before selling. The +/-17° angle is more aggressive than most OEM stems (~6°), so flipping it can significantly change fit—good for solving fit issues without new bars. Watch stack height: at 40mm, it may affect spacer setup on shorter steerers. Always recommend a torque wrench—over-tightening faceplate bolts can crush lightweight handlebars. Upsell opportunity: new bars if customer is upgrading cockpit, or headset spacers for fit adjustments.