Note: Lowering or raising the rear of your bike will change the geometry and handling of the bike. Please make necessary adjustments to your fork height in order to match the stock geometry or your riding preference. Installation Suggestions: We recommend you evaluate your front suspension whenever you adjust your rear suspension. 2 different seat heights for each side = 4 total different heights Align the dots on the inserts with the hash on the link. The forward most position will always raise the seat. 1 dot facing forward Front hole = Raised 20 mm Rear hole = Lowered 19 mm 2 dots facing forward Front hole = Raised 6 mm Rear hole = Lowered 32 mm We recommend that you make 50% of the rear adjustment to your front. Use this as a starting point, and then make adjustments to your preference or riding style. Recommended front suspension adjustments: Rear +20mm (Lower Fork Tubes 10mm+) Rear +6mm (Lower Fork Tubes 3mm) Rear -19mm (Raise Fork Tubes 10mm) Rear -32mm (Raise Fork lubes 15mm+) The Original Forks has hash marks every 5mm, making adiustment easy. The Facts: With Our Variable Height Suspension Lowering Linkage customize your suspension to either lower or raise your seat height. Lower your seat 19mm (0.74 in), 32mm (1.25 in), or raise your seat 6mm (0.24 in), or 20mm (0.78 in) from factory height. Lower your suspension to make your moto easier and more comfortable to put both feet down during stops on uneven terrain, or for more confidence in traffic. If you have a shorter inseam, increase your comfort and confidence knowing you will be able to plant both feet on the ground. Our variable height lowering linkage is an excellent way to improve your skill level, set your height to where youre comfortable and raise the height as your skill level improves! Four adjustable heights with provided inserts, 2 lowered heights, and 2 raised heights Lower your seat 19mm (0.74 in), 32mm (1.25 in) from factory Raise your seat 6mm (0.24 in), or 20mm (0.78 in) from factory Seat height adjustments are etched on the inserts Built in UHMW plastic linkage guard to prevent damage Precision CNC machined aircraft grade billet aluminum with anodized finish Needle bearings with integrated dust seals to provide OEM level ingress protection Robust 6mm thick UHMW integrated linkage guard to protect the lower shock mount (removable with 3x M6 flush mounted fasteners). The only offering with a built-in plastic guard, doesnt transfer impact like other rigid guards and wont snag like aluminum will. Each insert has 2 different holes and can rotated two different ways for a total four different ride heights. The inserts have the seat height adjustments etched on the inserts. Fitment: For Aprilia Tuareg 660 _x000D_