Other Kawasaki & Yamaha Flywheels 61X – 62T - 64X - 66E - 65U - 650 - 750 - 800

#ZERO

#ZERO

Beach Bum
Location
Florida - U.S.A.
Stock OEM Flywheel Weights:

Stock Yamaha F3T305 61X = 3.65-lbs. 650-701
Stock Yamaha F3T305 61X = 3.74-lbs. 650 VXR Thick Gear
Stock Yamaha F4T316 62T = 3.76-lbs. 701
Stock Yamaha F4T323 64X = 4.14-lbs. 760
Stock Yamaha F4T330 66E = 4.14-lbs. 800
Stock Yamaha F63M00 63M = 4.04-lbs. 1100
Stock Yamaha F65U00 65U = 4.04-lbs. 1200
Stock Yamaha F4T368 66V = 4.15-lbs. 1200
Stock Yamaha F4T 60T = 4.15-lbs. 1300
Stock Kawasaki FP5502 = 5.08-lbs. 440 or 550
Stock Kawasaki FP5504 = 5.64-lbs. PJS-550
Stock Kawasaki F3T304 = 3.76-lbs. 650SX
Stock Kawasaki F4T309 = 4.40-lbs. 750 Small-Pin
Stock Kawasaki F4T309 = 4.44-lbs. 750 Big-Pin
Stock Kawasaki F4T309 = 4.48-lbs. 800 SXR
Stock Kawasaki F4T322 = 4.20-lbs. 900-1100
Stock Polaris F4T310 = 5.00=lbs.
Stock Polaris Octane = 5.28-lbs. 777

Aluminum Flywheel Weights:

ATP TL Yamaha-701 = 1.56-lbs. Aluminum
RAD TL Yamaha-701 = 1.76-lbs. Aluminum
MSD TL Yamaha-701 = 1.78-lbs. Aluminum
Jetinetics TL Yamaha-701 = 1.63-lbs. Aluminum
TBM TL Kawasaki SXR = 1.85-lbs. Aluminum
RAD Yamaha 61X = 2.12-lbs. Aluminum
RAD Yamaha 62T = 2.03-lbs. Aluminum
TBM Yamaha 62T = 2.09-lbs. Aluminum
MSD Yamaha 61X = 2.22-lbs. Aluminum
Jetinetics Yamaha 62T = 2.40-lbs. Aluminum
Jetinetics Yamaha 61X = 2.50-lbs. Aluminum
Jetinetics Yamaha 62T = 2.62-lbs. Aluminum with Steel Hub
Jetinetics Yamaha 61X = 2.68-lbs. Aluminum with Steel Hub
TBM Kawasaki Big Pin = 2.18lbs. 750-800 Aluminum

Lightened Flywheel Weights:

LW MSD TL Yamaha-701 = 1.25-lbs. Aluminum
LW MSD TL Yamaha-701 = 1.14-lbs. Aluminum - Ring Gear Drilled
LW RAD TL Yamaha-701 = 1.32-lbs. Aluminum - Ring Gear Drilled
LW Yamaha F3T305 61X = 2.94-lbs. 650-701
LW Yamaha F3T305 61X = 2.80-lbs. 650-701 Ring Gear Drilled
LW Yamaha F3T305 61X = 3.10-lbs. 650 VXR Thick Gear
LW Yamaha F4T316 62T = 2.98-lbs. 701
LW Yamaha F4T316 62T = 2.86-lbs. 701 Ring Gear Drilled
LW Yamaha F4T316 62T = 2.76-lbs. 701 Ring Gear & Front Drilled
LW Yamaha F4T323 64X = 3.48-lbs. 760
LW Yamaha F4T330 66E = 3.48-lbs. 800
LW Yamaha F63M00 63M = 3.34-lbs. 1100
LW Yamaha F65U00 65U = 3.35-lbs. 1200
LW Yamaha F4T368 66V = 3.48-lbs. 1200
LW Yamaha F4T 60T = 3.48-lbs. 1300
LW Kawasaki FP5502 = 4.06-lbs. 440 or 550
LW Kawasaki F3T304 = 3.12-lbs. 650SX
LW Kawasaki F4T309 = 3.69-lbs. 750 Small-Pin
LW Kawasaki F4T309 = 3.40-lbs. 750 Small-Pin Ring Gear & Hub Drilled
LW Kawasaki F4T309 = 3.72-lbs. 750 Big-Pin
LW Kawasaki F4T309 = 3.48-lbs. 750 Big-Pin Ring Gear & Hub Drilled
LW Kawasaki F4T309 = 2.86-lbs. 750 Big-Pin TL
LW Kawasaki F4T309 = 3.80-lbs. 800 SXR
LW Kawasaki F4T309 = 3.48-lbs. 800 SXR Ring Gear & Hub Drilled
LW Kawasaki F4T309 = 2.92-lbs. 800 SXR TL
LW Kawasaki F4T309 = 2.60-lbs. 800 SXR TL Ring Gear & Hub Drilled
LW Kawasaki F4T322 = 3.50-lbs. 900-1100 Small Pin
LW Kawasaki F4T322 = 3.66-lbs. 900-1100 Big Pin
LW Kawasaki F4T322 = 3.30-lbs. 900-1100 Big Pin Ring Gear & Hub Drilled
LW Kawasaki F4T322 = 2.78-lbs. 900-1100 TL
LW Kawasaki F4T322 = 2.42-lbs. 900-1100 TL Ring Gear & Hub Drilled
LW Polaris F4T310 = 4.10-lbs 750
LW Polaris Octane = 3.28-lbs. 777

Note: All flywheel weights listed are plus or minus 0.05-lbs. due to balancing variations.
 
Last edited:
mindless

mindless

X
Location
VA
Are these lightened stock flywheels? How are you able to take so much material off when LPW and Group K will only take like .4 lbs off a stock wheel? I think you've taken off almost 1.2 lbs?

Where is most of the material removed from? Just curious from a reliability stand point. I'm definitely VERY interested if these will hold up well to surf and flat water pounding.
 
GIL

GIL

Power In The Hands Of Few
Location
Cullman AL
It appears to me that he is removing ALOT of metal off of the front face of the flywheel from the center hub out. Looks real good!!!
 
#ZERO

#ZERO

Beach Bum
Location
Florida - U.S.A.
The stock 62T flywheel weighs between 3.74 to 3.78 lbs depending on how it was stamped and balanced.

I'm removing well over three quarters of a pound of metal from the outer diameter edge front & rear with a light tapered cut on the front face.

You will be amazed at how much difference a pound off the rotating mass will make on the bottom end acceleration and throttle response.
 
Last edited:
Freakrider

Freakrider

X247
Location
Tampa Bay area
I have been running one cut by #.0 for several months now...and you will notice the difference...plus it's easier on your crank bearings...great seller...free bump
 
mindless

mindless

X
Location
VA
#.0 said:
The stock 62T flywheel weighs between 3.75 to 3.80 lbs depending on how it was stamped and balanced.

I'm removing about .5 lbs on the front & back outer diameter edge with a real light surface cut on the front face.

You will be very surprised at how much difference a half pound of metal off the rotating mass will make on the bottom end acceleration if you're running a stock flywheel.
Click to expand...

oh ok, i'm retarded, for some reason i thought stock was more like 4.5 lbs for a stock 62T

Do you have any 61x flywheels? I'm looking to buy one of each.
 
#ZERO

#ZERO

Beach Bum
Location
Florida - U.S.A.
I use a custom built balancing fixture with greaseless sealed bearings that works for flywheels and impellers.

I also do tapered reduction nozzle boring, cylinder head modifications, along with other machine work on request.
 
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MADMAT

MADMAT

Location
Ohio
I love my LPW 62t. I noticed the diff immediately! No going back now.

Alum chargers are over priced but AWESOME!!!
 
keefer

keefer

T1
Location
Tennessee
I had my old 61x flywheel lightened .5 lbs about 13 years ago and it still works fine. You can tell a difference and it is a cheap way to get some quicker Brap.
 
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