Spacer Handlebars Bracket — compatible with 318mm round, 20mm handlebars Key benefits Raises handlebar height by 10mm to improve riding posture and reduce lower‑back strain on longer rides. Creates a secure, wobble‑ connection between handlebars and stem for stable control under heavy use. Durable, corrosion‑resistant aluminum alloy construction keeps the unit lightweight and reliable in varied weather. What's included Set of aluminum alloy spacers designed for handlebar riser use. M5 heightening screws for secure attachment and consistent clamping force. Main features Compatibility: Designed for 318mm round handlebars with a 20mm tube diameter. Riser option: Provides a 10mm tube height increase to slightly elevate the bars and open up wrist/shoulder angles. Mounting precision: 40mm center‑to‑center hole spacing ensures exact alignment and a flush mount to prevent slippage or rotation. Materials and durability: Machined aluminum alloy parts resist corrosion, are easy to carry, and maintain structural integrity across weather and riding conditions. Performance and fit The combination of aluminum spacers and M5 screws creates a tight, wobble‑ assembly for general handlebar setups. Flush mounting and precise hole spacing reduce the chance of movement during vigorous cycling or rough terrain. Lightweight construction adds minimal weight while still providing reliable support. Use scenarios Longdistance touring: Add 10mm of height to relieve lower‑back and shoulder fatigue over multihour rides. Daily commuting: Fine‑tune handlebar position for a more comfortable upright posture during stop‑and‑go city riding. Off‑road or training rides: Securely raise bars for better leverage and comfort without compromising stability on bumpy surfaces. Installation notes Ensure compatibility with 318mm round handlebars and 20mm tube diameter before installation. Align holes to the 40mm center‑to‑center spacing and torque M5 screws to the manufacturer's recommended settings for a secure, flush fit. Check fasteners periodically, especially after initial rides and heavy use. Technical specifications Handlebars fit: 318mm round Tube diameter: 20mm Riser height: 10mm Hole spacing: 40mm center‑to‑center Hardware: Aluminum alloy spacers with M5 heightening screws Construction: Aluminum alloy, corrosion‑resistant This spacer bracket set offers a simple, durable way to raise your handlebars by 10mm, improve comfort, and maintain a stable connection between handlebars and stem for everyday and demanding rides.