Light Weight Fibreglass Race Seat with undertray.

To fit; Yamaha YZF-R1 20004-2006


Made by hand here in the UK from 450g CSM fibre glass with a flexible white gel base coat.

Constructed of chopped strand mat fibreglass and reinforced around mounting points and edges. This gives a good balance of strength, flexibility and lightness.

Why 450g CSM fibreglass? Because due to the random direction of the strands it provides a balanced strength in all directions, it also responds to and moulds to angles better with just one layer. As opposed to woven alternatives that still require a first layer of a CSM anyway and often create air gaps between the gel and the fibreglass, resulting in a brittle flakey gel coat.

Please allow 10-14 working days (Mon-Fri) until dispatch as this item is made to order.


It is recommended that it is fitted using shouldered bolts and soft washers to prevent damage from over tightening against the surface and as this is for race use and is not an original part, it may require some modifications to the motorcycle to allow fitment.

PLEASE NOTE; This item will be sent on a tracked service and will require a signature. supplied ready for preparation and painting (if you wish to paint it) supplied in white gel base coat, (This means it will need drilling, sanding, painting etc if you wish and may have some moulding marks that may need sanding). Also please bear in mind some modifying may be needed to allow fitment of a side stand if required and/or retain the standard exhaust due to the nature of enclosed belly pans for ACU regulations. No part is intended to take any load or form any part of the structure and all parts are to be fitted by a qualified and competent person, with all relevent checks to be performed before and after fitting as no liability or warranty is accepted or offered.

This item is not intended for road use and is a motorsport part only and as with the nature of all motorsport products no liability in any form will be accepted.

*PLEASE NOTE: DUE TO THE CHRISTMAS HOLIDAYS THERE MAY BE A DELAY IN DISPATCH TIMES (10-14 Working days PLUS the holiday days) This will include any orders placed. We will try to keep this to a minimum but nothing will be dispatched or produced during the holiday.

Thank you for your custom and We are sure you understand and wish you all a very merry Christmas and a happy new year.
Light Weight Fibreglass Race Seat with undertray.

To fit; Yamaha YZF-R1 20004-2006


Made by hand here in the UK from 450g CSM fibre glass with a flexible white gel base coat.

Constructed of chopped strand mat fibreglass and reinforced around mounting points and edges. This gives a good balance of strength, flexibility and lightness.

Why 450g CSM fibreglass? Because due to the random direction of the strands it provides a balanced strength in all directions, it also responds to and moulds to angles better with just one layer. As opposed to woven alternatives that still require a first layer of a CSM anyway and often create air gaps between the gel and the fibreglass, resulting in a brittle flakey gel coat.

Please allow 10-14 working days (Mon-Fri) until dispatch as this item is made to order.


It is recommended that it is fitted using shouldered bolts and soft washers to prevent damage from over tightening against the surface and as this is for race use and is not an original part, it may require some modifications to the motorcycle to allow fitment.

PLEASE NOTE; This item will be sent on a tracked service and will require a signature. supplied ready for preparation and painting (if you wish to paint it) supplied in white gel base coat, (This means it will need drilling, sanding, painting etc if you wish and may have some moulding marks that may need sanding). Also please bear in mind some modifying may be needed to allow fitment of a side stand if required and/or retain the standard exhaust due to the nature of enclosed belly pans for ACU regulations. No part is intended to take any load or form any part of the structure and all parts are to be fitted by a qualified and competent person, with all relevent checks to be performed before and after fitting as no liability or warranty is accepted or offered.

This item is not intended for road use and is a motorsport part only and as with the nature of all motorsport products no liability in any form will be accepted.

*PLEASE NOTE: DUE TO THE CHRISTMAS HOLIDAYS THERE MAY BE A DELAY IN DISPATCH TIMES (10-14 Working days PLUS the holiday days) This will include any orders placed. We will try to keep this to a minimum but nothing will be dispatched or produced during the holiday.

Thank you for your custom and We are sure you understand and wish you all a very merry Christmas and a happy new year.

Yamaha YZF-R1 04-06 GRP Fibreglass Race Seat R1 REF1037

Product Images

Important Information

It is recommended that when fitting composite bodywork shouldered bolts or washers are used along with rubber washers.

All of our fibreglass bodywork is supplied in white gel coat, Ready for prep and paint (if you wish to). Meaning it may need a sand in places before painting and may still have some mould marks etc. It will not be high gloss white but the picture in the listing is a true representation of the actual product.

All items are sold strictly for motorsport use and as such given the nature of motorsport will have no warranty or guarantee etc and no liability of any sort will be accepted.

Our 'official' working days are Monday-Friday, This excludes bank holidays and we are closed for the Christmas week every year. So please do consider this when ordering.

Product Description

Light Weight Fibreglass Race Seat with undertray.

To fit; Yamaha YZF-R1 20004-2006


Made by hand here in the UK from 450g CSM fibre glass with a flexible white gel base coat.

Constructed of chopped strand mat fibreglass and reinforced around mounting points and edges. This gives a good balance of strength, flexibility and lightness.

Why 450g CSM fibreglass? Because due to the random direction of the strands it provides a balanced strength in all directions, it also responds to and moulds to angles better with just one layer. As opposed to woven alternatives that still require a first layer of a CSM anyway and often create air gaps between the gel and the fibreglass, resulting in a brittle flakey gel coat.

Please allow 10-14 working days (Mon-Fri) until dispatch as this item is made to order.


It is recommended that it is fitted using shouldered bolts and soft washers to prevent damage from over tightening against the surface and as this is for race use and is not an original part, it may require some modifications to the motorcycle to allow fitment.

PLEASE NOTE; This item will be sent on a tracked service and will require a signature. supplied ready for preparation and painting (if you wish to paint it) supplied in white gel base coat, (This means it will need drilling, sanding, painting etc if you wish and may have some moulding marks that may need sanding). Also please bear in mind some modifying may be needed to allow fitment of a side stand if required and/or retain the standard exhaust due to the nature of enclosed belly pans for ACU regulations. No part is intended to take any load or form any part of the structure and all parts are to be fitted by a qualified and competent person, with all relevent checks to be performed before and after fitting as no liability or warranty is accepted or offered.

This item is not intended for road use and is a motorsport part only and as with the nature of all motorsport products no liability in any form will be accepted.

*PLEASE NOTE: DUE TO THE CHRISTMAS HOLIDAYS THERE MAY BE A DELAY IN DISPATCH TIMES (10-14 Working days PLUS the holiday days) This will include any orders placed. We will try to keep this to a minimum but nothing will be dispatched or produced during the holiday.

Thank you for your custom and We are sure you understand and wish you all a very merry Christmas and a happy new year.

Shipping Times

All of our items are shipped on a tracked service and may require a signature.

We pride ourselves in our shipping record, With every item of bodywork packaged in brand new double wall cardboard boxes (often doubled up for extra strength) and everything thoroughly bubble wrapped for additional protection. We simply do not suffer damage in transit. Although the shipping cost may seem high this is already subsidised and does not actually reflect the true cost, But you will not be disappointed with the level of care received (so beware of people shipping on the cheap, it doesn't add up).

Please allow an estimated 10-15 working days until dispatch as these are made to order and very sought after. This may be less, or sometimes more depending on work load, But we do try to keep it within or below 15 working days. If you require it by a specific date just drop us a message and we will give an honest estimation as to when it can be supplied and if we can meet your time frame. We will always do our best to squeeze you in.

About Us

We at GRPone.com are a UK based manufacturer of composite bodywork for racing and trackday motorcycles and are proud to say that every item of bodywork is hand made here in England in our dedicated workshop. This allows us to maintain a better standard of quality control over that of the imported 'made in China' brands and will always give you the comfort of being able to talk to us should you need to, about a product that we actually know about, as it was made by our own hands.

Choosing the right fairing manufacturer couldn't be easier... GRPone everytime.

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