Ultra FR OS MTB Riser Bar

Product Overview

The Ultra FR OS MTB Riser Bar is an entry-level mountain bike handlebar featuring 31.8mm oversized clamp diameter and double-butted 6061-T6 aluminum construction. Available in 40mm or 60mm rise options with 660mm width and 10° sweep, this bar provides durable performance at an accessible price point. Shot peened and anodized matte black finish.

Key Features

• Double-butted 6061-T6 aluminum – Heat-treated alloy construction with variable wall thickness reduces weight in low-stress areas while maintaining strength where needed
• 31.8mm oversized clamp diameter – OS (oversized) standard provides increased stiffness and strength compared to 25.4mm bars; compatible with modern OS stems
• Shot peened finish – Surface treatment compresses material and increases fatigue resistance for improved durability and longer lifespan
• Anodized matte black – Corrosion-resistant anodized finish protects aluminum and provides clean, low-gloss appearance
• Two rise options – 40mm rise for more aggressive, forward riding positions; 60mm rise for upright, comfortable positioning
• 660mm width – Standard mountain bike width balances control and maneuverability; can be cut down for narrower preference
• 10° sweep – Moderate backward sweep angle provides natural wrist position and comfort during extended riding

Technical Specifications

• Material: 6061-T6 aluminum, double-butted
• Clamp diameter: 31.8mm (oversized standard)
• Width: 660mm (can be trimmed)
• Sweep: 10° back sweep
• Rise options: 40mm or 60mm
• Finish: Shot peened, anodized matte black
• Weight: 285-350 grams (varies by rise option)
• Color: Matte black
• Recommended use: Mountain biking, trail riding, entry-level downhill

Compatibility and Ideal Use Cases

This bar fits any stem with a 31.8mm clamp diameter—the oversized standard used on most modern mountain bikes, BMX race bikes, and dirt jump setups. It will NOT fit older 25.4mm (standard) clamp stems. The 660mm width can be cut down to personal preference using a pipe cutter or hacksaw with a guide—always cut equally from both sides to maintain center marking and balance. The 40mm rise suits riders who prefer lower, more aggressive handlebar positions for descending or technical riding. The 60mm rise provides more upright positioning for comfort, visibility, and climbing efficiency. Ideal for entry-level mountain bikers, budget-conscious trail riders, or anyone replacing damaged bars on recreational bikes. The double-butted construction and shot peened finish provide durability suitable for trail riding, light downhill, and everyday use—not designed for extreme downhill racing or heavy impacts where chromoly or thicker-walled bars offer better strength. Verify your stem's clamp diameter before ordering, and consider rise height based on riding style and frame geometry.