Scooter and small bike tuners, want a bit more power from that 50cc 2-stroke engine? This is a big bore cylinder kit that bumps the displacement up to approximately 60cc. It's designed as an upgrade for engines like the TB50cc and the common 1DE41QMB 2-stroke motor found in many scooters, pocket bikes, and mini-motos. Brand is GY6 STORE, manufacturer part number is 169-185 (other part number M20). It's brand new. This kit typically includes the larger cylinder, a matching piston, rings, wrist pin, and circlips – everything you need to swap out the stock top end. This is a popular and relatively simple way to get more speed and torque without a full engine swap. NOTE: It says 'Warranty: No,' so this is for the experienced DIY mechanic. You'll likely need to re-jet the carburetor to account for the increased airflow. Always check your local laws regarding engine displacement modifications for street use. For off-road fun or sanctioned racing, this can really wake up a small engine. Make sure your engine case can accept the larger cylinder stud pattern. Get ready for a little more zoom!
