Construction: 1-inch O.D. x 0.120"; wall seamless 4130 chromoly tubing. All bends are created with internal mandrels on a CNC bender to reduce flat spots in the radiuses. Available in two styles: Smooth for aftermarket hand controls or custom applications, and Dimpled for stock Harley-Davidson switches and levers.
Fitment: At 8 inches from center of clamping area to center of the top bends, Biltwell Chumps fall right in the middle in terms of height. Thirty-five degrees of back sweep ensures your wrists remain comfortable on long rides. Depending on the height of the bars you're replacing, longer brake lines, clutch and throttle cables and/or switch wiring might be required.
A Few Words on Knurling: We don't knurl our bars because doing so reduces the surface area where the handlebar makes contact with the risers, thereby compromising clamping power. Stock and aftermarket steel risers commonly found on cruisers and custom big twins have a material density 4 times greater than aluminum. This density doesn't let knurling bite into the riser material, which in turn compromises clamping strength.
TBW ( Throttles-by-Wire ):
Overview: Every model of Biltwell throttle-by-wire handlebars for late model Harley-Davidsons features 4130 chromoly construction and Biltwell's state-of-the-art execution on TBW module integration.
• 0.120" wall (3mm) seamless 4130 chromoly tubing
• CNC-machined slots for internal cable routing
• Internal tube tapering on right bar end to accept TBW module