I’m still trying to understand it myself. Pro grips said they could’ve been defective
Pre pro grips- no throttle response issues with spacers
Pro grips on - the bike was lagging, felt like it took a firmer pull on the throttle to get her going.(spacers still on)
Post pro grips - felt normal
May benchmark for identifying the issue
- Stock grips- cruising speed on the highway at 80 mph 5k on the revs 6th gear
- Pro grips cruising speed at 80 mph over 5k in 6th gear, I had to give it more to keep the bike at 80
Really hard to explain but you know how you can take your fingers off the throttle and keep it engaged with just your palm? Stock grips with the benchmark above it held at 5k on the revs all day long. The throttle would not hold with pro grips amd my revs and speed would drop.
Hope this gives everyone a better understanding.