copenhagen101 Posted March 30, 2010 I need a new piston and cylinder and i was wondering if a 1998 yz426f and a 1998 yz450 will work on my 1998 yz400f. If you could give me yous advice that would be great, thank you...... Share this post Link to post Share on other sites
sacfelix Posted March 30, 2010 Yamaha made the YZ400f from 98-99, the YZ426f from 2000-2002 and the YZ450 from 03 to current. Share this post Link to post Share on other sites
grayracer513 My Ride Posted March 30, 2010 If you rebuild your YZ400 crank using a 426 rod, you can then use a 426 piston and cylinder. No 450 top end parts will fit on either a 400 or 426. Share this post Link to post Share on other sites
rmx250rider Posted March 30, 2010 If you rebuild your YZ400 crank using a 426 rod, you can then use a 426 piston and cylinder. No 450 top end parts will fit on either a 400 or 426. Would it be as reliable using the rod and cylinder.... can you use the cams out of the 400 in the 426 head? Share this post Link to post Share on other sites
grayracer513 My Ride Posted March 30, 2010 Yes and yes. Share this post Link to post Share on other sites
rmx250rider Posted March 30, 2010 can I still use the the part off the 400 that goes under the cylinder? I forgot its name Share this post Link to post Share on other sites
grayracer513 My Ride Posted March 30, 2010 The base gasket? Share this post Link to post Share on other sites
