Lightened Flywheel Service
$60 Yamaha 61X - 6M6 - 650 - 701
$60 Yamaha 62T - 701
$85 Yamaha 64X - 66E - 65U -
760 - 800 - 1200
$85 Yamaha 63M - 66V - 60T -
1100 - 1200 - 1300
$60 Kawasaki SX - 650
$75 Kawasaki - 440 - 550
$85 Kawasaki -
750 - 800 - 900 - 1100 - 1200
$85 Polaris - 650 -
700 - 750 - 777 - 800 - 1050
$90 MSD Total Loss includes ring gear pins
Lightened Flywheel Outright (no core required)
$100 Yamaha 61X - 6M6 - 650 - 701
$135 Yamaha 62T - 701
$135 Yamaha 64X - 66E - 65U -
760 - 800 - 1200
$135 Yamaha 63M - 66V - 60T -
1100 - 1200 - 1300
$100 Kawasaki SX - 650
$125 Kawasaki - 440 - 550
$135 Kawasaki -
750 - 800 - 900 - 1100 - 1200
$135 Polaris - 650 -
700 - 750 - 777 - 800 - 1050 -1200
If you don't see your flywheel listed and would like to have it lightened; send me a PM (private message) for a price quote. Also have a few other lightened flywheel types available on request and the ring gear drilling is optional on some models.
For those of you just wanting to ship one flywheel the cheapest method is to use a priority mail flat rate 12.5" X 9.5" envelope and it will only cost around
$5.15 to ship anywhere in the USA. The regional rate Box-A & Box-B work well for shipping multiple flywheels but they can only be found online. Discounts are available for multiple flywheels sent in the same shipment.
All lightened flywheels are each balance checked and are available in translucent colors to prevent corrosion on the machined surfaces.
Colors available:
RED - MAGENTA - ORANGE - GOLD - GREEN - BLUE - YAMAHA BLUE - PURPLE - CLEAR and others on request.
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All flywheels listed are lightened between .6-lbs to 2.0-lbs total weight removed and the specifications for each type are detailed in post four of this thread. Note: Aluminum flywheels are more than five times the price of a lightened stocker which are more prone to failure with cracking hubs, spinning ring gears, vibrating loose from hub heat expansion, weaker & smaller magnets that through the timing off or won't charge the battery well. A stock lightened flywheel will perform just as well or better than an aftermarket aluminum charging flywheel in my opinion because the lightest portion of the weight differential is from the aluminum hub itself which causes a majority of the problems. Alloy expands at twice the rate of steel so the aluminum flywheels need to be constantly re-torqued or your expensive investment will be ruined in seconds. There are quite few companies such as Pro-Tec, Group-K, LPW and others that lighten flywheels but none will be as reasonably priced or will remove as much total weight.
Tapered reduction nozzle boring starts at $40 plus the return shipping cost. Please specify which nozzle you have with the diameter wanted and if you would like to retain or delete the stock siphon tube for the factory bilge system. The last picture shows a chart of all the different angles and sizes for each reduction nozzle.
Cylinder head modifications can range between $40 to $80 plus the return shipping cost to your area. Send me a PM for the specific application options and compression numbers for each model.
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 = 1.28-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
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 = 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
Note: All flywheel weights listed are plus or minus 0.03-lbs due to balancing variations.
