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  • Jass Performance Adapter Rails For Sparco Sprint And R100 Seats – 2650 – GSM PerformanceJass Performance Adapter Rails For Sparco Sprint And R100 Seats – 2652 – GSM Performance
    Jass Performance Mazda MX5 Mk1/Mk2 Sparco Adapter Rails
    From £35.00 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
  • Jass Performance Mazda MX5 NC MK3 Lowering Adapters – 2655 – GSM PerformanceJass Performance Mazda MX5 NC MK3 Lowering Adapters – 2655 – GSM Performance
    Jass Performance Mazda MX5 NC MK3 Lowering Adapters (Non-Height Adjustable Seats)
    From £53.33 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
  • Jass Performance Mazda MX5 NC MK3 Lowering Adapters – 2658 – GSM PerformanceJass Performance Mazda MX5 NC MK3 Lowering Adapters – 2658 – GSM Performance3
    Jass Performance Mazda MX5 NC MK3 Lowering Adapters (Height Adjustable Seats)
    From £77.50 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
  • Jass Performance Seat Lowering Slider Rails For Mazda MX-5 Miata (ND) And Fiat Spider 124-2666-GSM Performance 1Jass Performance Seat Lowering Slider Rails For Mazda MX-5 Miata (ND) And Fiat Spider 124-2666-GSM Performance 2
    New for 2026
    Jass Performance Seat Lowering Slider Rails For Mazda MX-5 Miata (ND) And Fiat Spider 124
    From £289.00 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page
  • GSM20No20Image.jpgJass Performance Mazda MX5 ND MK4 Fixed Seat Lowering Adapters – 2654 – GSM Performance3
    Jass Performance Mazda MX5 ND MK4 Fixed Seat Lowering Adapters
    From £129.16 Excl. VAT Select options This product has multiple variants. The options may be chosen on the product page

Jass Performance are specialist in Mazda MX-5 components. We have a range of seat brackets, lowering kits, and rail adaptors in stock and available.