tacticalturnip
Elite Member
It looks like that bike has standard SRAM twist grip shifters. All the shifters operate basically the same. You just have to tighten the cable to take the slack out. There are high and low limit screws that keep the chain from going off the high or low side of the sprocket set. Once you've done it, it all makes sense. Just go on YouTube and there are all kinds of videos. It's fine to take a bike into a shop and let the professionals work on it but unless the wheels are out of round there isn't anything beyond the average person.

How To Shift SRAM Grip Shifters!

I found this, and my mind is trying to equate the left shifter to a range selector, does that track?
If so, it's coming together in my head. 7 speeds over 3 ranges, making the 21 speeds total.