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CRANKSHAFT/ Billet 76 degree Offset

CRANKSHAFT/ Billet 76 degree Offset

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This is a Special Order Item - Please Contact Us Prior To Purchase
This is a Special Order Item - Please Contact Us Prior To Purchase
$1,600.00

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Product Information

Details

M.A.P. CrankShaft
All Triumph 650/750 Twins 1960-72
   (Note for T120RV, TR6RV or TR6CV models use T140 crank)
89mm stroke
1-3/4" Journal (use with Norton Rod Bearings)
22  pounds

Features:
  4340 American Billet Material - 4340 steel    140,000-145,000 psi    strongest alloy for cranks
  Triple HeatTreat 
  "Ion Nitrite" treatment for Longest Life (Similar to British Tuftriding)
       Ionized nitrogen is vacuum deposited onto the crank surface in an oven,
       
penetrating .010 to .012 inch into the metal surface and changing the microstructure
      
of the steel, surface hardness is doubled from 30 to 60 on the Rockwell scale,
       while
fatigue life is increased by 25 percent.
 
Shotpeened to reduce internal stresses
  Cryogenically Processed creating a Microstructure with More Uniform Grain
  Generous Crank "Fillets" for strength and rigidity 
  OutBounded Counterweight to lessen crank flex
  Balanced to your bobweight (MAP and Stock Rods only)  Adds about a week to delivery
     A savings of up to $250 (normally not included with other billet cranks)
      (Note: Steel Rods will incur extra costs due to the cost of additional Mallory Metal)  

Additional Information

SKU MAP9214/76

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