Yamaha YZ125 Engines / Parts
ProX has a great line of parts for your YZ125. They have piston kits that have been precisely manufactured with low-expansion, low-friction piston alloy, using state of the art equipment. This installation-ready replacement piston kit comes with piston rings, a wrist pin, and circlips. ProX also has a Connecting Rod kit that is made of only the strongest alloy, to OEM specs so you have an easy installation and great performance. These kits come with a crankpin, big end bearing, small end bearing, and washers.
Hot Rods has a Crankshaft Assembly that comes with a Hot Rods connecting rod. Having been manufactured in a factory to OEM specs, these ready to install cranks will give you performance that your OEM parts can’t.
Wiseco has replacement engine parts for your 125, too. They have forged, one-piece pistons that are extremely stronger than your typical cast pistons. The pistons have been made from aerospace-grade alloy, and each top-end piston kit comes with a top-end gasket kit, ring kit, and alloy pin giving you everything you need.
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1998 YZ125 YZ 125 Engine Motor Bottom End Cases Transmission Crankshaft
$375.00 on eBay -
1995 YZ125 YZ 125 Engine Motor Bottom End Cases Transmission Crankshaft
$450.00 on eBay -
86 Yamaha YZ 125 used Engine Motor Bottom End Crankshaft Transmission *Nice*
$325.00 on eBay -
1997 96-97 YZ125 OEM CYLINDER TOP END BARREL JUG MOTOR ENGINE
$339.99 on eBay -
WISECO Top Bottom End YAMAHA YZ125 2002 Engine Rebuild Kit Crank Piston Gsk
$298.72 on eBay -
1997 Yamaha YZ125 Bottom End Engine Motor Cases Transmission Crank Yz 125 97
$409.99 on eBay -
2000 Yamaha Yz125 Left Right Engine Motor Crankcase Crank Cases Set
$179.00 on eBay -
2005 YAMAHA YZ125 OEM RIGHT SIDE ENGINE MOTOR CRANKCASE CRANK CASE ASSY YZ 125
$299.00 on eBay -
Yamaha YZ125 Cylinder NEW Wiseco Piston Top End Engine Kit YZ 125 Jug New Bore
$399.95 on eBay -
2001 Yamaha Yz125 Engine Motor Cylinder Jug Block 5mv-11311-11-00
$185.99 on eBay