An engine overhaul rebuilds a worn motorcycle engine back to proper running condition instead of replacing it. At BikeBoyzSG we do two levels: a top-end overhaul (head, valves, piston, rings — typically 3 to 5 working days) and a full overhaul that also opens the bottom end for crank, bearings and gearbox work (typically 5 to 10 working days). Every job starts with a teardown inspection and a written quote — we do not begin any repair until you approve the cost.
| Job | What it covers | Price |
|---|---|---|
| Top-end overhaul — Class 2B (up to 200cc) | Head, valves, piston, rings, gaskets. Most common job on daily commuters. | WhatsApp for price |
| Top-end overhaul — Class 2A (201–400cc) | As above, larger components and more labour hours. | WhatsApp for price |
| Top-end overhaul — Class 2 (above 400cc) | Multi-cylinder heads, more valves, more teardown time. | WhatsApp for price |
| Full overhaul (top and bottom end) | Adds crank, main bearings, big-end and gearbox inspection or rebuild. | WhatsApp for price |
| Teardown and inspection only | Waived or offset against the job if you proceed with the repair. | WhatsApp for price |
We quote rather than publish a price list, because the real figure depends on your model, what the teardown finds, and whether you choose genuine or OEM-equivalent parts. You always get a written quote before we start. For context, a motorcycle COE in Singapore cost $10,503 at the first August 2026 bidding, so a rebuild is usually far cheaper than replacing the bike.
Our senior mechanic Zul specialises in overhauls and valve work. If we cannot do a job properly in-house, we will say so and point you somewhere that can.
A standard top-end overhaul takes 3 to 5 working days. A full bottom-end rebuild takes 5 to 10 working days, depending on parts availability and the condition of the engine. We will give you a target date once the teardown is done.
A top-end overhaul covers everything above the crankcase: cylinder head, valves, piston, rings and cylinder bore. A full overhaul also splits the cases to reach the crankshaft, main bearings, big-end and gearbox. Most bikes only need the top end.
In Singapore, usually yes. A motorcycle COE was $10,503 at the first August 2026 bidding, and that is before the price of the bike itself. A top-end overhaul on a Class 2B bike typically costs a small fraction of that, so rebuilding a bike you already own and know is normally the cheaper decision.
Yes. We tear down, inspect and then send you a written parts-and-labour quote. No machining is booked and no parts are ordered until you approve it. If the honest answer is that the engine is not worth rebuilding, we will tell you.
We default to genuine or OEM-equivalent parts for anything internal. Where a good aftermarket option exists we will show you both prices and let you choose.
Yes — workmanship is covered. The exact terms depend on the job and the parts used, so ask us to put it in writing with your quote.
WhatsApp us the bike model and what you are hearing. We will tell you honestly whether it sounds like an overhaul or something simpler.
25 Kaki Bukit Road 4
#01-57 Synergy@KB
Singapore 417800
Mon–Sat 11am–8pm
Sun closed
