1300 oem piston sizes

**Duke** · 07-10-2007, 11:42 AM

Does anyone know what the sizes are for the 1300 oem pistons? I think there is 3 or 4 different sizes available in .0003/4 increments.

**jeffsntx** · 07-10-2007, 11:44 AM

Small, medium, large and Xtra large????

**Duke** · 07-10-2007, 11:48 AM

So much help Jeff. What would I do without you.

**RX951** · 07-10-2007, 12:03 PM

Red: 83.899–83.902 (3.3031–3.3032)

Orange: 83.903–83.906 (3.3033–3.3034)

Green: 83.907–83.910 (3.3034–3.3035)

Purple: 83.911–83.914 (3.3036–3.3037)

**Duke** · 07-10-2007, 12:23 PM

Thanks Billy.

Am I seeing that there is only 1/2 thousandths difference from largest to smallest?

**jeffsntx** · 07-10-2007, 12:28 PM

Thats what I see.

.0006 to be exact

**txgp1300r** · 07-10-2007, 12:57 PM

probably dont matter anyway...its so close

**mtrager** · 07-10-2007, 07:55 PM

The number on your cylinder determines which one you should get.

**Duke** · 07-10-2007, 10:32 PM

Originally Posted by mtrager

The number on your cylinder determines which one you should get.

I guess that would matter if they weren't 1200 cylinders bored and nicked to the OEM 1300 pistons I sent to have matched at .0038.

**mtrager** · 07-11-2007, 06:44 AM

I knew you would know that.

I had to look in my shop manuel because my guy said at the Yamaha shop all the pistons were the same size.

Thread: 1300 oem piston sizes