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Athena Big Bore Kits - Yamaha

From $995.00
Where to buy

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.

  Code Description RRP Availability
STANDARD BORE KIT WR F 250 '01-'12 / YZ F 250 '01-'07 Image GAC 0485100011 STANDARD BORE KIT WR F 250 '01-'12 / YZ F 250 '01-'07 $995.00 In stock Enquire now
BIG BORE KIT YAMAHA YZ250F 01-07 / WR250F 01-12 290cc Image GAC 0485100012 BIG BORE KIT YAMAHA YZ250F 01-07 / WR250F 01-12 290cc $1555.00 Not in stock Enquire now
Big Bore Kit Yamaha YZ250F 250/290 08-13 Image GAC 0485100026 Big Bore Kit Yamaha YZ250F 250/290 08-13 $1555.00 Not in stock Enquire now
BIG BORE KIT YAMAHA YFZ 450 S QUAD-ATV '04-'11 98mm/478cc Image GAC 0485100016 BIG BORE KIT YAMAHA YFZ 450 S QUAD-ATV '04-'11 98mm/478cc $1685.00 Not in stock Enquire now
BIG BORE KIT YAMAHA YZ450F 03-05.WR450F 03-06 480cc Image GAC 0485100014 BIG BORE KIT YAMAHA YZ450F 03-05.WR450F 03-06 480cc $1685.00 Not in stock Enquire now
BIG BORE KIT YAMAHA YZ450F 06-09. WR450F 07-15 (478cc) Image GAC 0485100021 BIG BORE KIT YAMAHA YZ450F 06-09. WR450F 07-15 (478cc) $1685.00 Not in stock Enquire now
BIG BORE KIT YAMAHA YZF 450 10-16 Image GAC 0485100054 BIG BORE KIT YAMAHA YZF 450 10-16 $1685.00 Not in stock Enquire now
BIG BORE KIT YAHAMA YZ 250 F '14-'18 / WR 250 F ' 15-'18 276 cc Image GAC 0485100050 BIG BORE KIT YAHAMA YZ 250 F '14-'18 / WR 250 F ' 15-'18 276 cc $1555.00 Not in stock Enquire now

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