Spinner offers a complete range of suspension seat posts from the budget-minded SP200 to the extreme light weight SP300 air post. The SP300 and SP250 feature forged double clamp heads and aluminum bodies. The SP200 uses cast aluminum heads paired with alloy shafts. Spinner seat posts are built to the same standards as our suspension forks and rear shocks. They offer riders exceptional comfort and safety combined with Spinner’s quality and competitive pricing.