Sunlite Handlebar Shims 22.5-25.4mm BlackSunlite Handlebar Shims are great for conversions on BMX and Cruiser bikes. Due to the alloy composition and the grips, they’ll latch on almost invisible and last a long time. The purpose of these are to allow a handlebar that is too small for a clamp to fit in comfortably, keeping it from moving during your ride.072774341481