Fine-tune your comfort with the Velotric Suspension Seatpost Spring Tuning Kit, designed to deliver a perfectly personalized riding experience. What’s Inside: This kit includes three interchangeable springs to cover all preferences: Swap effortlessly between three color-coded springs to match specific weight ranges and preferred ride feels: White – Soft (110–150 lbs): Delivers maximum cushioning for a noticeably softer, cloud-like ride. Yellow – Medium (150–200 lbs): Provides a standard, perfectly balanced feel for daily commutes and versatile riding. Blue – Hard (200–250 lbs): Offers noticeably firmer, responsive support tailored for heavier loads or those who prefer a stiffer feel. ?? IMPORTANT NOTE: This product includes the spring set only . The suspension seatpost is NOT included . This kit is designed as an upgrade for users who already own a Velotric suspension seatpost. Compatibility: Fits all Velotric Suspension Seatposts.