How many miles on it? Might try to find another one to compare it to. You can also measure the stiffness by rigging a small fish scale. Whatever you do don't lube the cable as that will cause the nylon liner to swell and make it drag. The only thing you can try is checking to see if there's crap between the grip and bar making it hard to turn.
I had to replace my first throttle cable at 18k due to an accident, it must have swung the bars against the stops and kinked it. It isn't too hard to replace but the tank needs to come off.
'06 R12GS, '13 s1000RR
Originally Posted by Big Steve
I've yet to see a poor person driving a real gas hog......
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