ProTaper EVO 1-1/8" Handlebars

The ProTaper EVO 1-1/8-inch Handlebar is a benchmark unbraced oversize handlebar engineered to replace restrictive OEM bars with a purpose-built, high-compliance steering platform. ProTaper pioneered the tapered oversize bar concept, and the EVO series represents the highest evolution of their alloy engineering. Utilizing a proprietary computer-profiled 4mm wall design, the EVO combines aerospace-grade 7000-series aluminum with exceptional tensile and yield strength ratings. The absence of a rigid crossbar enables the bar to flex dynamically along its length, dissipating track harshness before it reaches the rider's hands.

The manufacturing process involves chemical etching and a hard-anodized shot-peened finish that resists abrasive scratching from trail branches and roost. On the bike, the EVO delivers distinct mechanical advantages: steering response remains sharp and predictable during heavy rut entry, yet square-edge rocks, braking bumps, and harsh casing impacts are met with compliant deflection rather than punishing shock. Riders prone to chronic arm pump and hand numbness frequently transition to the ProTaper EVO due to its measured vibration-damping characteristics and forgiving flex arc.

• Clamping Diameter: 1-1/8" (28.6mm) oversize taper
• Control End Diameter: Standard 7/8" (22.2mm) with chemically polished throttle side
• Material: Proprietary 7000-series aerospace alloy
• Wall Thickness: Precision-drawn 4.0mm computer-tapered profile
• Surface Treatment: Hard-anodized, shot-peened finish with knurled clutch grip section

### Step-by-Step Installation & Safety Protocols Installation begins with preparing 1-1/8-inch (28.6mm) bar clamps. Remove the throttle housing, grips, switchgear, brake master cylinder, and clutch perch. Ensure the clamping surfaces on the triple clamps are clean and free of metallic debris. Set the ProTaper EVO into the saddles and reference the precision laser-etched alignment marks to adjust handlebar roll forward or backward according to rider ergonomics. Tighten the clamp bolts evenly in a criss-cross sequence to manufacturer torque specs (typically 22-25 Nm). Install the left-side grip using grip glue and safety wire, taking advantage of the knurled left grip area which prevents grip slippage under wet conditions. Ensure the smooth right side permits effortless throttle tube rotation.

### Maintenance & Inspection Guidelines Routine maintenance involves checking clamp bolt torque periodically and inspecting the bar's taper transitions after crashes. Never attempt to straighten a bent aluminum handlebar with heat or mechanical leverage, as this permanently compromises the crystalline molecular structure of the 7000-series alloy.

Frequently Asked Questions