This listing includes a pair of DIAMOND+ 400mm (15.75") Machined Shocks for the Can Am Ryker Rally 600 900. Also included: (2) 10mm coils. We also offer extra-durable Delrin bushings in our eBay store! Performance Engineered: Full 4-Way Adjustability Precision-tuned for the serious rider. These Diamond+ Shocks are designed to be fully customizable to your vehicle's weight, your riding style, and the terrain. Fitment Note: These shocks include 10mm bushings by default. If you require 12mm or 13mm bushings, please include a note with your order to ensure correct fitment. Adjustable Length: Fine-tune your ride height by unscrewing the lower shock eye and setting the threading nut to your desired length. Adjustable Preload: Dial in your sag using the included tool to tighten the collar above the spring coils. Compression Tuning: Control compression speed with precision. Use the included Allen wrench to adjust the inside silver knob on the top reservoir. Rebound Tuning: Manage the shock's return speed. Use the included Allen wrench to adjust the inside silver knob on the bottom reservoir. Technical Specs: 400mm Spring Rates This listing includes upgraded 10mm coils (standard for this shock is 9mm). Spring rate specifications are listed below for reference. Coil / Kit Type Spring Rate Max Force (Per Shock) 400 x 9mm Coils 157 lbs/in 618 lbs 400 x 10mm Coils 222 lbs/in 873 lbs 400 x Dual-Rate Kit 200 lbs/in 630 lbs Upgrade Your Experience: Delrin Bushings For riders seeking maximum durability and tighter tolerances, we offer our Delrin Shock Bushing Upgrade. These are precision-machined to reduce play and extend the life of your mounting points. Available as an optional add-on during checkout. Diamond J Customs Warranty: Also included: (2) 10mm coils. We stand behind our engineering. We will replace any shock components that fail within three months of purchase at no charge (limit one replacement per purchase).