The adjustable wheelbase allows you to customize the bike's setup. Features: Pressurized gas shock absorber (nitrogen) with floating piston. Steel body, 14 mm low-friction stem, CNC-machined Ergal heads. Adjustments: Rebound (7 clicks), Spring preload (continuous), Wheelbase (up to 7 mm). Contents: Specific mounting instructions, suspension manual, preload adjustment tool. Image is indicative only.