Written by Marlon Slack
Most engine swaps on motorcycles are sensible. People will stick a SR400 engine into a British plunger frame. They?ll lower a shovelhead engine into a hardtail. It usually makes sense. But rarely will a builder do something as bonkers as Malaysia?s FNG Works. They?ve crammed a 600cc Honda thumper engine into a diminutive Honda C70 and somehow done it cleanly enough that it looks perfectly stock.

Irwann Cheng, head of FNG Works, has spent years honing his craft under other people. Initially employed at renowned Malaysian workshop Beautiful Machines he left the shop to work as an engineer. In his spare time he trundled along, making custom motorcycles, furniture and sundries in his spare time. Then he quit and went all out on FNG Works Speedshop, a retail store that sells riding apparel and builds custom motorcycles.
With such a pedigree Irwann and FNG has built quite a reputation in Malaysia. Hell, two years ago their premiere national motorcycle show, The Art of Speed, commissioned Irwann to build a motorcycle for a giveaway. So FNG made a bombastic, stretched, twin-engined RX-Z Yamaha. The organisers loved it and wanted another custom ride for their 2018 show. But this time around Irwann wanted to build something a little more subtle. Well, sort of subtle.

?I wanted to further the ?sleeper? factor by retaining the stock frame… and shoving a bigger engine in it.?
The build started with a stock little C70 Honda spotted by Irwann during an ev...