Yamaha PWC Top End Kits
Take the guess work out of rebuilding your Yamaha top end.
For a limited time free return shipping on our top end kits to the 48 Continental States!!!
Full Bore top end kits are returned to you with everything needed for your top end rebuild, including Your cylinders bored to the next available piston size. pistons, rings, pins, bearings, circlips, head gasket, base gasket, exhaust gaskets and any other gaskets that come in a top end gasket set for your model.

All work is guaranteed!!!
After we receive your cylinders we will inspect them and determine what oversize pistons it will take to make the cylinders straight (usually 1st or 2nd over) then bore your cylinders on a boring bar, final sized with a rigid hone. The ports are chamfered in a 3 stage process to ease the rings back in, including a final hone to extend engine life, and improves performance. The kit is returned to you with everything needed for your top end rebuild
No more trips home from the machine shop without your cylinders because the pistons weren't big enough to clean it up. Let alone the fact you have to send those pistons back and order another set. We keep it simple and offer solutions for your top end rebuild and get you back on the water.
All cylinder work is done here atFull Bore.
If you send your old piston and spark plug, we can usually tell you what caused the failure so you can keep this from happening again. Please note old pistons and spark plug will be disposed and not returned.
Free return shipping on top end kit's purchased here on the website only!
Our top end rebuild kits include everything needed for your top end rebuild.
- Pistons
- Rings
- Gaskets
- Circlips
- Upper bearings
- Wrist Pins
- Your cylinders bored to fit.
If your cylinders are already 0.040" (1mm) over, or need to go larger to clean up, cylinder resleeving would be required.
Accepting credit cards through pay pal, right here on the web site. It's the safe and secure way to pay online.
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Most kits are offered with standard style pistons and Platinum (molly coated). The Platinum pistons are coated to reduce Friction.
Yamaha top end rebuild kits.
Yamaha 650 (6M6) , 700, 701 (61X) or (62T) and 760 (64X).
WSM standard top end rebuild kit.
The kit is returned to you with everything needed for your top end rebuild, including your cylinders (2) are bored up to 0.040" (1mm) oversize. Includes 2 WSM pistons, rings, pins, bearings, circlips, head gasket, base gasket, and exhaust gasket. $285.
For a limited time free return shipping on our top end kits to the 48 Continental States!!!
note Platinum kits are offered below.
Platinum
Yamaha 700, 701 61X or 62T top end rebuild kit
The kit is returned to you with everything needed for your top end rebuild, including your cylinders (2) are bored up to 0.040" (1mm) oversize. Includes 2 WSM Platinum (molly coated) pistons, rings, pins, bearings, circlips, head gasket, base gasket, and exhaust gasket.
Yamaha 700, 701 61X or 62T and 760 (64X) $295.
For a limited time free return shipping on our top end kits to the 48 Continental States!!!
Yamaha 1100 or 1200 PWC Top end kit
The kit is returned to you with everything needed for your top end rebuild, including your cylinders (3) are bored up to 0.040" (1mm) oversize. Includes 3 WSM pistons, rings, pins, bearings, circlips, head gasket, base gasket, and exhaust gasket.
1100 with std style pistons $375 Platinum pistons (molly coated) $395
1200 Non Power valve model in Platinum $445
For a limited time free return shipping on our top end kits to the 48 Continental States!!!
Yamaha 1200 power valved cylinders are plated and cannot be bored. If your cylinders have been sleeved then we can make a kit for you.
Yamaha standard bore cylinder measurements.
4th oversize is 1mm (0.040") larger then standard bore.
Yamaha - 650 is 77mm, 700 and 1100 are 81mm, 760 and 1200 are 84mm.
Cylinder resleeving
If you already purchased a Full Bore top end kit and your cylinder needs a new sleeve we will replace the sleeve part and labor for an additional $100. We also offer complete resleeve kits Starting at $450.
Sea Doo 580, 587, 650, 657, 657x 717, 720, 787, 800, 947 or 951
Yamaha 500, 650 (6M6) , 700, 701 (61X) and 700, 701 (62T) 760 (64x) or 1100.
Additional sleeves to top end kit.
Yamaha Resleeve top end Kit's
resleeving back to standard bore.
Note if standard bore pistons aren't available we would bore to first oversize that is available.
Yamaha 650 (6M6) , 700, 701 (61X) and 700, 701 (62T) 760 (64x) resleeve Resleeve complete kit's $450.
Your cylinders (2) are resleeved, then bored to standard bore to match new WSM Platinum (2) pistons, rings, pins, bearings, circlips, head gaskets, base gasket, and exhaust gaskets.
All cylinder work is done here at Full Bore.
Resleeve complete Starting at $450.
Placing an order is straight forward.
First find what you are looking for and make the payment right here on the website.
After making payment with buy it now button, ship your cylinders with a copy of receipt, contact phone #, return shipping address and any special requests.
If paying with a cashier check (certified bank check) please contact us at info@fullboreonline.com to let us know it is coming so we can keep it in mind for scheduling. Please note that we schedule our workload by payments received and or deposits. Shipping us something overnight doesn't mean we can do it immediately. If you are in that big of a hurry, be sure to find out our current turn around time before ordering.
Contact us
Email us at info@fullboreonline.com
Phone 989-379-2402
9-5 Monday - Friday
Shipping address (shipping only)
Full Bore
486 S Ripley Blvd
PMB #228
Alpena, MI 49707

