Backrest Raising Kits by Jass Performance, Left
WARNING: May contain chemicals that may cause cancer or reproductive harm.Experience exceptional comfort and driving ergonomics in your lowered ND/Spider MX-5 or Miata with the Jass Performance Seat Backrest Raising Kit. Designed specifically to complement seat lowering kits (approximately 50 mm), this upgrade restores the correct backrest geometry, ensuring optimal support and posture for taller drivers. By lifting the backrest 50 mm, it rebalances your seating position for a more natural and comfortable fit behind the wheel. This precision-engineered kit enhances both comfort and practicality. By allowing your upper body to recline further, it provides about 30 mm (over one inch) of additional effective headroom, creating a more relaxed and ergonomic driving posture. The corrected alignment of the backrest also restores the factory-intended relationship between the side supports, headrest, belt guides, and built-in speakers, improving both comfort and safety during spirited driving or long trips.
The complete kit includes everything you need for a clean, professional installation: backrest raising brackets, a padded leather-finished back support, and side carpet cushions for a factory-quality finish. It retains the full functionality of your seat's reclining mechanism and installs easily using a bolt-on design - no cutting or permanent modifications required.
Fully reversible and driver-focused, the Jass Performance Seat Backrest Raising Kit is ideal for enthusiasts who prefer a low seating position but still need proper back and head support. It's especially recommended for drivers who position their seat fully rearward with a reclined backrest. For best results, pair it with a seat lowering kit and remove the backrest tensioners (a simple, reversible step).
In short, this upgrade offers a personalized fit, enhanced comfort, and improved safety, ensuring your driving experience feels as refined as your MiataËÇÖs handling.
Moss Has You Covered
- All products we sell are warrantied against defects in material and workmanship by the original equipment manufacturer or Moss Motors, Ltd., for 12 months from the date of shipment.
- We will replace the product or refund your purchase price at our discretion.
- The warranty does not cover labor, failure of a related component, failure resulting from faulty installation, nor would the liability of Moss Motors exceed the cost of the original component.
- Warranty requests should be submitted to our sales department and must be supported by the original Moss Motors purchase invoice and documentation of the failure.
- Many of the brands we carry have their own warranty terms that have you covered outside of our 12 month protection.