Biltwell Tyson XL 1 1/8 TBW Handlebars The Tyson XL Fly-By-Wire handlebars boast rugged, seamless 4130 chromoly construction for strength and comfortable ergonomics for high-performance riding and clean aesthetics, making it the perfect match for modern club style bikes. The handlebar is 0.120 wall (3mm) seamless 4130 chromoly and tapered from 1 1/8 at the center to 1 O.d. on the ends. CNC-machined slots are cut near both bar ends to facilitate easy wire routing on stock hand controls, and the notches on the throttle side accept the stock H-D TBW (Throttle-By-Wire) assembly. Tyson XL's vertical uprights are 1 1/4 O.d. x 0.120 wall seamless 4130 chromoly tubes precision mitered and TIG welded to the handlebar for beauty and strength. Features Handlebar is 1-1/8 at the center, tapered to 1 O.d. on the ends Vertical uprights are 1 1/4 O.d. 0.120 wall thickness Slots for internal wiring of cables TIG-welded internal mounting bungs accept 1/2-13 t.p.i. mounting bolts Vertical uprights are 3 1/2 apart on center Notched for Fly-By-Wire Specs: 30 1/2 Wide 2 3/4 Pullback