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     'BIG BORE' Yamaha 5 valve motorcycle engine parts

        Available for FZR,  Exup and Thunderace engines from 989 to1002cc std capacity

         

All Yamaha 5v 'Big bore' engine kits include 4 oversize pistons plus large bore head gasket.  Pistons used are WISECO, made in America from highest quality forgings and are supplied with original equipment ring sets and matching gudgeon pins. Gaskets are Cometic.

We also supply WISECO pistons for any motorcycle application, plus liner kits - please ask for details and prices.

Wiseco piston kits

Wiseco pistons

 

Big bore engine kit prices 

                                                                                                                                            
Oversize Part No Bore    Price   
1041cc WR1041 77.0mm £607.67
1070cc WR1070 78.0mm £607.67

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We also supply the following tuning parts for this range of engines:-

 
bulletKent Camshafts and parts available for all popular makes please ask for details and prices.

   eg. FZR/YZF '1000' Steel billet cam set from £798.00, YZF 1000 R1 to '03 including pulleys £882.00

 

bulletHeavy Duty clutch spring set at £15.00

  Set of six - 50% up-rated extra heavy duty clutch pressure plate springs

  Fits FZR Genesis 750/1000, Exup, Thunderace, YZF R6 99-02, YZF R1 04-06

 

          

 

 

 
bullet Vernier timing gears  Available for FZR,  Exup and Thunderace
bullet engines from 750 to1002cc std capacity exchange at £32.00 per pair

 

 

 

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bullet

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Wiseco Big bore engine kits
Kent cams
Heavy duty clutch springs
Vernier timing gears
 

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