Which bike motor?

[gabriel41599]

I am deciding on two bike kits at the moment. I want to know what is the best motor http://www.gasbike.net/grubee_skyhawk_gt5_66cc_80cc_slant_head_standard_finish_bike_motor_kit.html or the http://bikemotorkit.com/index.php?route=product/product&path=60&product_id=69.

I appreciate the opinions.
Thanks

 

[dodge dude94]

I personally have the GT5, the 2011, version, but it's mostly the same.

It's a good engine, there are better out there, but it works.

The second engine has a better chain and better crank bearings, I'm sure somebody with more experience will chime in.