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BGM PRO 177 Cylinder Kit

This is quite simply the best all-around performance cylinder kit we've ever come across for the 125cc/150cc Vespa motors. This is a straight plug-and-play solution which fits natively to all 3-port Largeframe and P-Series 125cc and 150cc engine cases (not for electric start motors without sacrificing the flywheel starter-gear ring) and can also work on earlier 2-Port Largeframes with minor case modifications. The bgm PRO 177 cylinder kit comes with a ceramic plated alloy barrel with 63 mm bore. The piston has two 1 mm rings and high content of silicium. There are four main transfer ports and two boostports. The cylinder kit is designed to give lots of torque from low down and a very broad power band. The port timings with a 57 mm crank are 118° transfer timing and 171° exhaust timing. The kit is easy to fit and a Plug & Play solution that works out of the box. With a SI carb and the bgm Big Box Touring the power at the rear wheel is 15 hp and the torque 17 – 19 Nm. Higher power outputs are easy to obtain and 25 hp shouldn’t be a problem.The cylinder head is fully CNC machined from billet alloy with 4 mm recess. The recess is for centralizing and sealing. In the centre at the top of the head is a thread, if you want to use a temperature gauge. UPSHOT: Perfect allround kit that is easy to fit and setup. Gives power and torque low down, broad power band, low fuel consumption and an unbeatable value for money! Ref: BGM1770N
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BGM - Germany
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