SPS Motorsport BMW Gearbox Conversion Kit for Mazda MX-5 NA NB

From: £4,464.00

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SPS Motorsport BMW Gearbox Conversion Kit for Mazda MX-5 NA NB

After months of development, SPS Motorsport have finally released their BMW gearbox swap kit for the Mazda MX-5 NA & NB. Capable of taking pretty much anything you can throw at it, this is the ultimate solution for those wanting to push into the 300+hp mark. This kit is a plug and play conversion kit for high power BP & B6 engines and includes everything you’ll need for the installation.

SPS have cleverly developed this kit to use a custom PPF and retain the OEM prop. This means the gearbox is mounted to both the diff and the engine the same way Mazda designed it. This setup does away with the need for a hard body mount, significantly reducing NVH compared to other kits. SPS say this kit can withstand up to 500hp or a colossal 650nm.

Kit Contents

Driveshaft adapter (CroMo alloy steel, plasma nitrided)
Gearbox adapter plate from Mazda B6/BP engine to BMW GS6-37BZ/DZ gearbox (EN AW-6061T6, anodised)
Flywheel specially made for the kit (alloy steel, 6.8kg)
Short shifter with automatic centring and reverse lockout
PPF frame, which fits on BMW gearboxes and Mazda original differential (7.5kg)
Adapted shift linkage
LUK clutch kit
Wilwood clutch master cylinder
TRW clutch slave cylinder
Various bolts and mounting fittings

This kit is compatible with the GS6-37DZ & GS6-37BZ BMW gearboxes. Below is a list of vehicles which came from the factory with these gearboxes.

GS6-37DZ:

E81 120D
E82 120D
E87 Facelift 120D
E88 120D
E90 320D
E91 320D
E92 320D
E93 320D
E60 Facelift 320D
E61 Facelift 320D

Caution! This gearbox was built in two variants. SPS chose the N47 gearbox (the starter motor has to be on the lower side) for the conversion.

GS6-37BZ:

E46 325TI
E46 330CI
E46 330I
E60 520I
E60 525I
E60 530I
E61 525I

Additional information

Shipping Weight	31.9 kg
Shipping Dimensions	135 × 40 × 20 cm
Brand	SPS Motorsport
Gearbox	GS6-37DZ, GS6-37BZ
Model	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.