This is something I don't understand. Shimano has been advertising the Race brake as a lighter version of the Trail brake. The Internet description of the products all support the notion that the Race brakes are a lot lighter. But is this true? Let's look at some weights.
All pictures credited to 2011 Shimano XTR – Actual Weights for Full Component Group - Bike Rumor
Rear Race Brake
Rear Trail Brake
Thats a (253g - 237g) = 15g weight difference for each side
It's already a minimal weight difference, and it puts Shimano's claim of a 60g weight saving of the Race brake system over the Trail to shame.
Lets not forget the the Trail version comes with the heavy finned pads whereas the Race version does not.
Race metallic pads
Trail finned metalic pads
Weight of fins: (16g - 5g) = 11g
Don't forget the Trail brake comes with a pair of the fins, so the total weight gain (of fins) for one side is 22g .
Minus-ing the weight gain we got originally for one side(15g) with the added weight of the pair of fins(22g), we realize that the trail version without the fins is actually an atonishing 7g lighter than the race.
This is with the added Servo-wave, free stroke etc functions of the levers.
Does anyone have weights of the Race and Trail brake versions of their own to confirm this finding?
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