163ML 16hp 200cc engine which is used in Rickshaw abundantly in Pakistan is bolt on fit-able to RP125 and gives a lead of 5HP to stock bike.
Picture of engine with its complete a-z accessories.
Radiatotor pressure cap
The Out standing Qualities (from its booklet):
（1）Adopt Special Type of Clutch Plate with Special Type of Oil-resistant Rubber and Colophony to prolong the using life of Clutch plate 20%more than normal Clutch Plate. (Six pole and six patch, normally four pole and five patch).
（2）Adopt Newly Designed Piston――Even-coping Pottery-plated Piston.
Main advantages as followed:
A.Much lighter and more lubricative. Excellent performance in reducing the friction and optimizing the power output.
B.Improve burning environment of the mixed gas and strengthen the torque at lower and middle speed.
C.Newly advanced manufacturing techniques have been adopted for high quality piston. It has excellent performance in preventing heat leak into the bottom in order to prolong the using life of the piston and piston rings.
（3）Adopt Special Type of Piston Ring (CRY) with two special metals: Cr & Nb to enforce the intensity.
（4）Adopt double-modulus Main Shaft and double-modulus Countershaft to enhance the gears, to enlarge the transmission ratio, to strengthen the anti-wallop ability. It has excellent performance in prolonging the using life of engine.
these qualities are not included in locally manufactured 200cc rickshaw engine...
by the way this engine is not for sale and is going into my own ride.