ELEVN 31.8 Flat 8.5" Handlebars

Product Overview

The ELEVN 31.8 Flat Handlebars use championship-winning geometry with an oversized 31.8mm clamp diameter for increased front-end stiffness. Built from post-weld heat-treated 4130 chromoly with 13 butted and tapered tubes, these bars balance light weight with racing durability. Featuring an 8.5" rise, 29" width, and swedged crossbar design, these bars are designed exclusively for 31.8mm stems on BMX race bikes.

Key Features

• 31.8mm oversized clamp area – Larger stem interface diameter increases stiffness and reduces flex during hard acceleration and aggressive steering inputs
• Post-weld heat-treated 4130 chromoly – Heat treatment after welding maximizes strength throughout the bar, including weld zones, for consistent durability
• 13 butted and tapered tubes – Variable wall thickness and tube shaping reduces weight in low-stress areas while maintaining strength where needed
• Swedged crossbar design – Cold-worked crossbar section adds torsional stiffness without increasing weight
• Championship-winning geometry – Same proven dimensions as ELEVN's standard 22.2mm bars, adapted for oversized stem compatibility
• 8.5" rise – Tall rise (215.9mm) provides upright positioning for visibility and control on BMX race tracks
• 29" width – Race-oriented width balances leverage with aerodynamic profile; can be trimmed for narrower preference
• Standard 22.2mm grip area – Compatible with all BMX grips despite oversized clamp section

Technical Specifications

• Brand: ELEVN
• Material: 4130 chromoly steel, post-weld heat-treated
• Construction: 13 butted and tapered tubes with swedged crossbar
• Bar clamp diameter: 31.8mm (oversized—requires 31.8mm stem)
• Grip area diameter: 22.2mm (standard BMX)
• Rise: 8.5" (215.9mm)
• Width: 29" (736.6mm)
• Back sweep: 5°
• Upsweep: 1°
• Weight: 29.98 oz (850 grams)
• Finish: Not specified (likely chrome or painted—verify at purchase)
• Recommended use: BMX racing

Compatibility and Ideal Use Cases

Critical: These bars require a 31.8mm (oversized) stem—they will NOT fit standard 25.4mm BMX stems. Verify your stem's clamp diameter before ordering. If you have a 25.4mm stem, you must either purchase a 31.8mm stem or select standard-diameter bars. The 22.2mm grip area is universal and fits all BMX grips regardless of stem size. The 8.5" rise suits taller riders (approximately 5'10" and above) or those who prefer very upright positioning for maximum visibility and comfort on race tracks. Shorter riders should consider 7-8" rise options. The 29" width can be cut down using a pipe cutter or hacksaw—always cut equally from both sides to maintain center positioning. Best suited for competitive BMX racing where the increased front-end stiffness from the 31.8mm clamp provides better steering precision and power transfer during gate starts and sprint sections. The post-weld heat treatment and butted/tapered construction balance weight (850g is competitive for chromoly race bars) with the strength needed for racing impacts. The championship-winning geometry reference suggests these dimensions are proven at elite racing levels. At 850 grams, these bars are heavier than carbon or ultra-thin aluminum options but provide the durability and consistent feel preferred by many racers. The swedged crossbar adds stiffness without weight penalty—beneficial for powerful riders or aggressive cornering. Not ideal for freestyle BMX where standard 25.4mm bars are more common and the racing-specific geometry may not suit trick riding.

Colors: Black with White, Blue, Red, Grey, Sand, Slate and Teal graphics, with white specification graphics on bar grip area.