Jass Performance Hardtop Brackets Side For Mazda MX-5 NA NB

£38.00 inc. VAT

9 in stock|7 more due on 28/05/2024

Jass’s hardtop brackets allow you to securely and permanently install the OEM hardtop. This can reduce body flex, wind noises and squeaking giving a coupe-like feeling.

Laser-cut from 4mm steel, pre-bent and powder coated, Jass has designed these as a direct fit with or without the interior trim. These brackets create a strong metal on metal connection between the hardtop and chassis.

By ditching the OEM clamps, you can also have a whopping 2KG of weight. If you’re mounting a hard top you may want to remove your soft top to further reduce weight and create more cabin space, ideal for track and race cars.


  • Permanently install hardtop
  • Reduces chassis flex, wind noise and squeaking
  • Laser-cut out of 4mm steel
  • Black powder coat
  • Uses OEM bolts
  • Sold as a pair

Please note these are the rear brackets only, front brackets are sold separately (See below)

Installation notes

Jass recommend you use the following installation procedure for best results

  1. Loosely install the brackets on the hardtop (3 bolts)
  2. Centre the brackets on the frames with the 2 larger bolts
  3. Tighten the 3 hardtop bolts
  4. Push the hardtop in position using one of these techniques:a) A second person pushes the hardtop to the front for the front brackets and down for the rear bracket

    b) Use one of the OEM clamps while tightening the bracket on the other side. You may need to slightly adjust the brackets after a short settling-in period using this method.

  5. Fix tight all the bolts on the brackets.
  6. The hardtop will settle into its final position quite fast, usually around 20-30km. If wind noise is present you may need to reinstall the front brackets. If you do this, you will need to remove the rears to allow for further adjustment.
  7. Some important things to note before installing the hardtop- Make sure rear mounts, the ones that attach to the Frankenstein bolts, have the rubber insulation underneath. Damaged or missing insulation can cause rear knocking noises.

    – Before the installation, make sure you grease the rear hardtop seal with a silicone-based lubricant. This greatly reduces the likely hood of the seal squeaking.

Additional information

Shipping Weight 0.365 kg
Shipping Dimensions 24 × 8.5 × 1 cm

Jass Performance


Mk1 (89-98), Mk2 (98-05)

Warranty information

Warranties cover defects in materials and workmanship only. Warranty is for replacement of a similar product, repair of the original product or refund of the purchase value only and excludes all labour and incurred charges including towing, fitting, inconvenience, and purchases of other manufacturer's products. The warranty is good for the period stated in the additional info tab from the date of purchase. Mileage warranties are for road use only and proof of mileage is required. Products must be installed by an independent experienced professional mechanic and the suspected defect must be present at the outset. The warranty does not cover damage caused by incorrect installation, failure to comply with the maintenance requirements of the vehicle, processing or otherwise changing the product, ordinary wear and tear, or any other external influences. Warranties are invalid if the product is used for racing, rallying, drifting, track days or any other form of motorsport or competition. Please refer to the manufacturer's own warranty documentation for more information.

Making a warranty claim

Proof of purchase receipt showing the date of purchase, proof of mileage at installation, proof of current mileage and invoice of the work undertaken by an independent experienced professional mechanic must be supplied along with the returned products for a warranty claim to be considered. If your vehicle needs to be used whilst your warranty claim is considered replacement parts from the same manufacturer should be purchased through BOFI Racing. In the event of a successful warranty claim, we will refund the card that was originally used to purchase the replacement parts, in full or in part depending on the nature of the claim. BOFI Racing reserves the right to make full or partial compensation at its sole discretion depending on the condition and mileage use of the returned suspect parts. For example, if you have used the part for several thousand miles before a defect is noticed, only partial compensation may be offered.

Make Model Year
Mazda MX-5 I (NA) 1989 - 1998
Mazda MX-5 II (NB) 1998 - 2005