This Öhlins cartridge system with a 30mm piston is for bikes with inverted forks. Perfect for riders that have a focus on the best obtainable handling and feedback from their ride. It is a bolt-in installation into the original front fork; but springs must match the rider''s weight and preferences for the perfect set-up. Provided is adjustable compression and rebound damping separated in each leg; as well as preload adjustment which is accessible from the black top caps. The Öhlins ''NIX'' technology is developed from high level racing such as WSBK (Superbike World Championship) to deliver you the utmost performance on road as well as on track for years to come.Note: Please follow Öhlins recommendations regarding spring rates and oil in relation to rider''s weight and preference as listed. Note: Recommend fork oil: 962112 (1 liter) or 962113 (4 liter) R&T #5 (approx. SAE 7.5W)Note: See our website for additional information on exact model fitment; ABE approval and technical details. - Piston diameter: 30mm - Position: front - Oil level mm: 140 mm - Packaging unit: pair - Not ABE approved. Note: 9.5 N/mm; 10 N/mm and 11 N/mm spring sets are included; others must be ordered separately. Springs are sold in pairs. Please follow Öhlins recommendations regarding spring rates and oil in relation to rider''s weight and preference as listed. - 962747Spring rate 8.0 N/mm (custom) - 962748Spring rate 8.5 N/mm (custom) - 962749Spring rate 9.0N/mm (approx. 50 kg rider / preload