TECHNICAL

Yes, all bolts required for fitment of GBRacing products are included.

The STOCK refers to the stock casings, as you would see on your bike in the showroom. The KIT refers to factory casings, normally the alternator cover, where race teams would purchase factory alternators that produce minimal charging of the battery, to reduce inertia and therefore increase performance. Therefore, the KIT alternator cover is designed for a kit alternator casing which has replaced the standard casing.

The STREET refers to the street bullet sliders. These street bullet sliders protrude past your fairings. They protrude approximately 20mm more than an equivalent race bullet slider, providing a balanced design of protection to your fairings. As with all sliders on the market, the further they protrude the greater the chance of gripping against more solid objects whilst sliding. Our aluminium tube design that holds the bullet moulding in place, is tubular. This tubular design acts as a sacrificial aluminium section, that will bend should the slider hit a solid object and have very little chance of ripping your engine mount threads out, as can occur from other designs on the market when the product is too rigid and strong.



The RACE refers to the race developed bullet sliders. These sliders are designed to fit flush to, or under, your motorcycle fairing. They are designed more to protect your radiator, frame and other vulnerable areas, helping the bike to remain on it's side whilst sliding. The race versions have very little chance of causing the bike to flip and causing any more damage than necessary, as can occur from other designs on the market when the product is too rigid and strong.

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We use the word RACE on our part descriptions when a secondary engine cover may touch the STOCK fairing but does not on a RACE fairing as a RACE fairing can be modified.

Yes. Fitting Instructions are available within the product page on the website. You will also receive a fitting instruction sheet when you order one of our products.


All of our engine covers are designed to have a gap between the OE engine case and the GBRacing secondary engine cover allowing the natural flow of air to circulate around the engine, not causing overheating or running at a higher than usual temperature.

GBRacing engine covers are tested in extreme environments and temperatures across the world by World SBK Teams, Moto2 in the GP paddock, EWC (Endurance World Championship) as well as national championships worldwide including BSB.

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Every new product or bike range is posted in the news section and on our social media.

Only a few products require fairing modification, as this is an issue we always try to avoid. If a fairing does require modification, this will be noted within the product description.


You need to know the make, model and MANUFACTURED year of your motorcycle.

GBRacing specifically designs, manufacturers and tests each product with the user in mind. They are a very easy to fit bolt-on product and come complete with all the necessary hardware. All products are made in our factories in the UK. We are honoured to be homologated by the FIM on all our engine covers and brake lever guards. Our high impact nylon and long glass fibered materials are the strongest composite products on the market to date and as such our approval by the FIM has continued since 2010. They do prevent oil spills in the vast majority of crash scenarios.

No. GBRacing designs its products to bolt-on to the existing engine covers, leaving no unsightly residues behind, and most do not damage the fairings.

In some rare circumstances, the fitting of our cover will cause some very slight damage to the original cover. This is caused by dirt that can accumulate behind our cover combined with constant high vibration. To ensure the product works efficiently in the event of an accident, a 1mm approximate gap is designed into the product, between our cover and the original casing. 



It is clearly not practical to remove the GBRacing cover every time you use the bike, to clean behind our cover, but our covers are designed to protect your engine. There is no product on the market that can 100% guarantee no damage to the original engine casing through dirt build-up and vibration.


The alternative is the potential damage caused to the original cover by not fitting our covers and in some circumstances internal damage caused to the engine itself.


Our covers are the only product on the market that are FIM approved, something we are very proud of and testament to the way they work in an accident plus they provide the added safety aspect to other riders of preventing engine fluids escaping onto the tarmac.

No. The V4R has a Hub Plate under the O/E clutch cover which causes the GBRacing cover to touch the fairing.

No, as the V4S has a wet clutch and the O/E case holds the oil in the engine and the V4R cover is for a dry clutch.

Yes it will fit and the V4S will fit the V4R, unless the V4R is fitted with a race spec Radiator and has the Aluminium radiator hose fitted above the Alternator.

We haven’t made covers for the Ducati Diavel as we believe that if the bike goes over, the engine cases are highly unlikely to touch the road due to the fittings around them.

Every crash is different, so its impossible to be 100% free of risk. However, GBRacing crash mushrooms are designed to bend themselves under severe impact, reducing the strain on the frame and risk of digging in as much as possible.

GBRacing® has secured a second patent for Reverse Wear Indicators Indicators - Patent #GB2532535. This design feature enables scrutineering to gauge when the cover requires replacing to maintain the highest level of safety. This new feature is present on all secondary engine covers released from 2017 onwards plus many earlier models.

All our products have Torque figures, as recommended by the bike manufacturers. These are shown on our fitting instructions which come with your product.

If you put an object in the cap head bolt ie. a pen / small dowl with tippex or grease on the end, then refit your fairing, pushing the panel against the make shift marker. Remove the panel and there should be a mark on the inside showing where your hole should be cut.