made no modification to the spring. got'er on with my fingers and a flathead. my tomos, stock other than airbox delete and a upjet struggled to go in to gear up hill, and on flat. Gave my moped a pipe and it did much better. woop woop
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Not too stiffy
January 15, 2021
taco eater :
Chudas from Wichita Falls, TX United States
Perfect for the M101, a little tough to get on, the red was nearly impossible. Nice upgrade from stock when you’re running a kit. Not for stock cylinders though! Think about it!
Oops, this was meant for the yeller 25lbs one.
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"stiffer"
May 11, 2015
taco eater :
Jake from Sioux falls, SD United States
Virtually the same as stock... I noticed very little change with blue on 2nd gear on my a3
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Great up hills
July 20, 2014
taco eater :
J from Worcester, MA United States
I have this for my first gear and a 25 lb spring in my second gear for my Tomos Golden Bullet A35 and I go up any STEEP hill at 15-18 mph, I shift into second around 20mph. And it shifts like magic. I can WOT from 0-45 on my stock tomos (pipe, sprocket, hi comp head) with 0 bogging, don't need to ease into anything, runs minty.
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Great springs
May 16, 2014
taco eater :
Philip Patrie from Lafayette, IN United States
These are well made springs, and really give your clutches something to slip about. Not to hard to install, just do it like this and be happy. http://mopedhq.blogspot.com/2014/05/tomos-moped-clutch-spring-installation.html
went on pretty easy on my a35 
"stiffer"