THRASHIN SUPPLY CO. RISER 8 STRGHT BLK TSC-8000-1Constructed of 6061 aluminum, Both pullback and straight riser options have top clamps angled at 35, Fits all models with 3 1 2" center to center riser spacing, Work with any standard 1" handlebar, Top upper clamp bolt is 4 1 2" center to center, Base hole tapped for standard 1 2" x 13 mounting bolts (bolts not included), Sold with top clamp and hardware, Made in the U. S. A.