Take your rear-end performance to the next level with the Thunder Pro Rear Wheel Spacer 1# (Left) — built for riders who demand precision and durability.

Designed for exact fitment and optimal wheel alignment, this Pro-spec spacer helps maintain correct rear geometry for smoother rotation and improved stability. Precision-machined from high-strength materials, it’s made to handle tough riding conditions, heavy loads, and high-performance use. Number 15 in photo.