Hi all, just a quick intro here. Installed the 35cc Robin 4 st5roke kit from GEBE two years ago. At age 74 I feel that my road biking days are rather limited. Enter the engine kit era. The Robin engine kit on my Raleigh mtn bike works like a charm. I'm able to climb mountain roads that are too risky to descend with the stock brakes! Absolutely love the setup.