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Old 06-18-2007, 01:05 AM
  #2227  
rcabj
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Originally Posted by ziggy12345
The crank on the left is an IFMA EFRA spec crank. The one on the right is a BRCA or non modified crank. EFRA changed the rules for this year to allow modified cranks but the BRCA and others such as the french are lagging behind.
Cheers
like to know what is the difference between this 2 types of spec crank in term of performance and economy....tq
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