Athena-BIG-BORE-YAMAHA
yambb-GAC 0485100011
yambb-GAC 0485100012
yambb-GAC 0485100014
yambb-GAC 0485100016
yambb-GAC 0485100021
yambb-GAC 0485100026
yambb-GAC 0485100050
yambb-GAC 0485100054
Athena-BIG-BORE-YAMAHA
yambb-GAC 0485100011
yambb-GAC 0485100012
yambb-GAC 0485100014
yambb-GAC 0485100016
yambb-GAC 0485100021
yambb-GAC 0485100026
yambb-GAC 0485100050
yambb-GAC 0485100054

Get more power and torque with premium quality European big bore kits that include, cylinder, piston, rings, and all gaskets required for a hassle free conversion.

Spare pistons, rings, and gaskets also available.

Can't see your bike listed here, or the product you want is not in stock? Get in touch to see if there's a kit for your model and ask about price and availability.

Athena Big Bore Kits - Yamaha

Sku:N/A
$995.00
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26 items left in stock

Please note, some some stock is located in store and others at our nationwide warehouse, please allow 1-2 days for collection in store or send us a message
Stock Item
  • STANDARD BORE KIT WR F 250 '01-'12 / YZ F 250 '01-'07
  • BIG BORE KIT YAMAHA YZ250F 01-07 / WR250F 01-12 290cc
  • Big Bore Kit Yamaha YZ250F 250/290 08-13
  • BIG BORE KIT YAMAHA YFZ 450 S QUAD-ATV '04-'11 98mm/478cc
  • BIG BORE KIT YAMAHA YZ450F 03-05.WR450F 03-06 480cc
  • BIG BORE KIT YAMAHA YZ450F 06-09. WR450F 07-15 (478cc)
  • BIG BORE KIT YAMAHA YZF 450 10-16
  • BIG BORE KIT YAHAMA YZ 250 F '14-'18 / WR 250 F ' 15-'18 276 cc

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Free delivery when you spend over $95.00 
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