Big Dog Diablo/Hustler Super Z Mower Seat Mechanical Suspension The Big Dog Diablo/Hustler Super Z Mower Seat Mechanical Suspension is a premium seat that is designed to significantly reduce vibrations in lawn mower equipment. This unique drop in replacement offers every driver the ultimate level of individual comfort. Features: Grammer MSG65/531 Seat Durable Cut Sew Black/Silver Vinyl covering with Yellow Piping Low-profile mechanical suspension with suspension travel of 2.36" Vacuum formed narrow seat cushion of 18.5" Asymmetrical backrest shape to make driving backwards more comfortable Adjustable backrest in increments of 2.5 adds comfort and versatility Mechanical lumbar support to help prevent lower back pain Adjustable fold-up armrests Retractable seat belt with switch for added safety Fore/aft isolator absorbs jarring for extra comfort Slide rails provide fore/aft adjustment Weight indicator with adjustment of 100 - 375 lbs Comes standard with operator presence switch Includes adapter cable for direct fit Applications: Multiple Applications for Turf Equipment. Ideal for Big Dog and Hustler Lawn Mowers: May Fit Some Models - Check Bolt Pattern to Ensure Proper Fit (Refer to Technical Drawings in Documents Tab) Big Dog Zero-Turn Lawn Mowers: Diablo, Diablo MP Hustler Zero-Turn Lawn Mowers: Super Z, Super Z Diesel, Super Z HyperDrive Replaces Grammer Part Number: 1438635 Please Note: Seat cushion must not touch vehicle in order to ensure reliable function in operator presence detector.