Big bore kit -Motorcycleall Rating

A big bore kit increases the displacement of a small two-stroke motorcycle engine, usually a CRF50, to at least 570cc. This type of modification can increase power and performance, but some engines run hotter than others. A big bore kit increases the displacement of any two-stroke motorcycle engine by increasing the diameter of the combustion chamber. This process can make it more efficient at burning fuel. Here are the advantages of big bore kits:

SaleBestseller No. 1
GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit for 64mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring
  • This big cylinder kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.
  • 64mm valve length version
  • Easy Installation
  • Upgrade engine parts included cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, clutch spring sets, copper roller sets, 6pins racing AC CDI, ignition coil and racing 3-electrode spark plug
  • Upgrades parts kits for most of 50cc scooter
SaleBestseller No. 2
NICHE 94mm 434cc Big Bore Cylinder Piston Kit for 2000-2015 Arctic Cat Kawasaki Suzuki KFX400 KLX400R
  • Replaces OEM Part Numbers: Suzuki 11210-29F20-0F0, 11241-29F00, 12111-29F00-0F0, 12140-29F00, 12151-24F10, 09381-20004, 11141-29F01, 09160-10082, 11191-13E00; Kawasaki 11005-S007, 11061-S070
  • Compatible with the 2003-2006 Kawasaki KFX400, 2003-2004 Kawasaki KLX400R/SR, 2003-2014 Suzuki Quadsport LTZ400, 2004-2008 Arctic Cat 400 DVX
  • Includes 94mm Big Bore Cylinder (434cc), Piston, Piston Rings, Wristpin and Circlips
  • Also Includes Head Gasket, Base Gasket, Exhaust Gasket and Coolant Gasket
  • Nikasil Plated Cylinder Bore and Stroke 94.00mm x 62.60mm
SaleBestseller No. 3
Athena (P400485100029) 58mm 144cc Big Bore Cylinder Kit
  • Package Dimensions: 15.494 H x 33.528 L x 20.573 W (centimetres)
  • Package Weight: 5.599 pounds
  • Built from race proven designs to Yamaha factory specifications
  • Country of Origin : Italy
Bestseller No. 4
BBR Motorsports 150CC Big Bore Kit W/Cam for Yamaha TT-R125
  • New aluminum cylinder with steel liner is bored, honed and ready to assemble
  • New high performance camshaft included
  • Comes with piston, rings, clips, head and base gaskets
  • Complete kit requires no exchange
SaleBestseller No. 5
Athena (P400485100003) 54mm 125cc Standard Bore Cylinder Kit
  • Contracted from aluminum, the cylinder is lined with a nickel-carbide coating for durable, reliable performance
  • Built from race proven designs to Yamaha factory specifications
  • Chosen by the top race teams in all forms of racing including super cross, motocross, GNCC, superbike, and more
  • Maximizes HP and service life in Yamaha Dirt Bikes and offroad vehicles
  • Fits the following rides Yamaha YZ 125 1997-2004
SaleBestseller No. 6
BBR Motorsports 120cc Big Bore Kit with Cam 411-HXR-1001
  • Kit Includes: BBR aluminum cylinder, piston, rings, piston pin, clips, performance camshaft, heavy-duty valve springs, rockers with tappet adjusters and gasket kit
Bestseller No. 7
NICHE 102mm 686cc Big Bore Piston Cylinder Kit for 2001-2008 Yamaha Grizzly Raptor Rhino 660 660R 3YF-11181-00
  • Replaces OEM Part Numbers: Yamaha 3YF-11181-00-00, 5KM-11310-00-00, 3YF-11351-00-00, 2C6-11603-00-00, 93450-24028-00, 3YF-11631-00-X0,3YF-11633-01-00, 90201-102G9-00,90105-10649-00, 90105-09648-00
  • Compatible with the Yamaha 2001-2005 Raptor 660R, 2002-2008 Grizzly 660, 2004-2007 Rhino 660
  • Includes Cylinder, Piston (10:1), Piston Rings, Wristpin, Circlips (2), Head Gasket and Base Gasket
  • Also Includes O-Ring, Cylinder Studs (4), Cylinder Stud Washers (4) and NGK Spark Plug
  • Cylinder Bore and Stroke 102.00mm x 84.00mm
Bestseller No. 8
NICHE 686cc Big Bore 10:1 Compression Cylinder Kit for Yamaha Grizzly Rhino 660
  • Fits 2002-2008 Yamaha Grizzly 660, 2004-2007 Rhino 660
  • Replaces OEM: 3YF-11181-00-00, 5KM-11310-00-00, 3YF-11351-00-00, 2C6-11603-00-00, 93450-24028-00, 3YF-11631-00-X0
  • Also replaces OEM: 3YF-11633-01-00, 90201-102G9-00, 90105-10649-00, 90105-09648-00, DPR-8EA90-00-00, 5KM-11101-01-00
  • Includes: (1) Cylinder, (1) Cylinder Head with built in spark plug, (4) Cylinder Stud Washers, (2) Short Cylinder Studs, (2) Long Cylinder Studs, (1) Head Gasket, (1) Base Gasket, (1) O-Ring, (1)
  • Cylinder Bore and Stroke of 102.00mm x 84.00mm
Bestseller No. 9
BBR Motorsports Big Bore Kit 58mm 120cc
  • New Bbr Motorsports 120Cc Bbore Kit W/Cam Bbr
  • Manufacturer Part Number: 411-HXR-1001 (120Cc Big Bore Kit With Cam)
  • Item only fits specific models listed. The picture could be generic.
  • Message us with VIN/HULL for fast fitment verification.
  • Color: N/A
Bestseller No. 10
Top Notch Parts Replacement 12:1 Big Bore 366cc Cylinder Top End Kit For 87-04 Yamaha Warrior 350 yfm350 Piston Rings Pin Gasket Kit
  • Replaces OEM Part # 1UY-11310-03-00 90387-16547-00 93210-18322-00 99530-14016-00 4KB-11351-00-001UY-11181-01-00 4GB-11610-00-00 55V-11633-00-00 93450-19095-00 1UY-11631-01-Y0 3GD-15451-00-001UY-13440-02-00 1UY-14451-01-00
  • 12:1 Big Bore 366cc Cylinder Kit For 1987-2004
  • Upgrade your stock warrior with this kit. 12:1 compression ratio. teflon coated side and ceramic top piston
  • includes complete rebuild gasket kit. includes all as shown in the picture to complete your rebuild. upgraded metal gaskets.

Last update on 2022-05-12  / Images from Amazon Product Advertising API

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