Fine Tune Suspension With Progressive Rate Springs. Includes Three Pairs: Red, Blue, Yellow. Spring Dimensions: 72mm Length, 15mm Id. Designed for 1/10 Scale Slash 2Wd. Rear Shocks Only, Enhances Handling Performance. Elevate your stock 1/10 Electric Slash's performance with our expertly crafted Rear Progressive Spring Set, tailored specifically for the 1/10 Electric Slash. This versatile 3-pack offers a dynamic range of tuning possibilities with three distinct pairs of springs: the Red springs with a 4.5lbs rate, the Blue springs at 8.0lbs, and the Yellow springs at 9.5lbs. Each spring is precisely engineered with dimensions of 72mm in length, a 15mm inner diameter, and an 18mm outer diameter, ensuring an ideal fit for your rear shocks. While not hop-up parts, these springs are essential for fine-tuning your model's suspension, delivering improved handling and stability across diverse terrains. With item number T8087, this set is a must-have for enthusiasts looking to enhance their racing experience and achieve superior performance on the track.