How Much Does an OBU Lock Cost in Singapore? (2026 Price Guide)

Short answer: OBU locks in Singapore cost between S$6 and S$20. 3D-printed plastic covers sell for S$6–12 on Shopee, Lazada and Carousell. Plastic "locks" with a key mechanism run S$10–15. The only full-metal OBU lock on the market — MOTOLOCK, 2mm SUS201 stainless steel — costs S$19.90, one-time. The real question isn't the sticker price: it's what a stolen cashcard costs you when a cheap plastic cover fails.

Search "OBU lock" on any Singapore marketplace and you'll see prices from S$6 to S$20. To a rider who just wants to stop topping up S$10 at a time, the difference looks small. It isn't. Here's what each price tier actually buys, in steel and in security.

OBU lock price comparison (Singapore, 2026)

Type	Price	What you get	Theft protection
Free DIY 3D print (MakerWorld / Thingiverse STL)	S$0 + ~S$3–5 filament	Your own print, usually PLA or PETG, held on with tape or a clip	None — layer lines split, warps in Singapore heat, pries off by hand
3D-printed plastic cover (Shopee / Lazada / Carousell)	S$6–12	Thin plastic shell that covers the cashcard slot	None — it is a deterrent, not a lock. Snaps or pries open in seconds
3D-printed plastic "lock" with key	S$10–15	Plastic box with a plastic key mechanism	Minimal — the plastic mechanism breaks or is pried open; a visible fake lock signals that your card has value
MOTOLOCK — full stainless steel	S$19.90	2mm SUS201 steel box, tamper-proof screws, Ø6.5mm padlock hole, weatherproof powder coating	Real — removal needs a power drill and cutting a padlock. The only metal OBU lock in Singapore

That's the whole market. Every OBU cover and "lock" sold in Singapore today is 3D-printed plastic — except one. MOTOLOCK is the only full-metal option, and it costs less than two packets of the plastic ones.

The S$10 top-up trap: what a stolen card really costs

Here's the math most price comparisons miss. Riders top up S$10 at a time because they expect to lose the card. That habit exists because plastic covers fail — and it's the habit that makes the "cheap" option expensive:

One stolen card with S$50–120 topped up — that's 3 to 6 times the price of the only metal lock, gone in one theft.
Replacing a warped or snapped plastic cover — S$6–12 again, every few months, forever. A metal lock is bought once.
Topping up S$10 at a time — you pay the same card fees and make more trips to the ATM, indefinitely, because you don't trust the cover.
Card theft is common in Singapore even though street crime is low — cashcards are small, valuable, and gone in seconds. See how to stop cashcard theft.

MOTOLOCK ends the cycle: top up S$120, leave it in, forget about it. One-time S$19.90 vs. recurring S$10 top-ups and stolen balances — the metal lock pays for itself the first time it stops a theft.

Why the cheapest OBU locks fail

Plastic covers fail in two ways, and both are predictable:

Material. PLA — the most common 3D-print filament — softens at 60°C. A parked bike in Singapore sun easily exceeds that, so covers warp, split along layer lines, and fall off. See why 3D printed OBU covers fail in Singapore's heat.
Design. A clip-on shell or a plastic key mechanism is not a lock. It's a deterrent that breaks in seconds when someone actually tries. See why plastic "locks" make theft worse.

Worse than failing silently: a visible fake lock signals money. A thief sees a "lock" on your OBU and knows the card inside is worth taking. A plastic lock that breaks in seconds turns your bike into a target with no protection. See 3D printed covers vs metal locks.

Is S$19.90 expensive for an OBU lock?

Compare it with what riders already pay:

One coffee run — S$6–8, gone in 10 minutes. The metal lock lasts for the life of the bike.
One ERP top-up loss — S$50–120 if the card is stolen. The lock costs less than a fifth of that.
One replacement plastic cover — S$6–12, every few months, forever. The metal lock is bought once.
One workshop visit — S$30+ for anything OBU-related. MOTOLOCK installs at home in under 5 minutes with a screwdriver. See how to install an OBU lock.

S$19.90 is the price of the only lock that actually locks. Every cheaper option is a plastic cover that fails in the sun and signals money to thieves. The metal lock is the cheap option — once.

Quick answers

How much is an OBU lock in Singapore? S$6–20. Plastic covers S$6–12, plastic "locks" S$10–15, the only full-metal lock (MOTOLOCK) S$19.90.
Is a S$6 OBU cover worth it? No. It's a plastic shell that pries off by hand and warps in Singapore heat — a deterrent, not a lock.
Why is the metal OBU lock more expensive? 2mm SUS201 stainless steel, tamper-proof screws and a real padlock mechanism cost more than filament. It's also the only one that stops theft.
How much does MOTOLOCK cost? S$19.90, one-time, including quick release under 2 seconds and weatherproof coating. All proceeds go towards funding the founder's BTO.
Where can I buy an OBU lock in Singapore? Plastic covers: Shopee, Lazada, Carousell. The only metal lock: MOTOLOCK on Carousell.

MOTOLOCK: the only real lock in Singapore

MOTOLOCK is the only OBU lock in Singapore that is full 2mm SUS201 stainless steel with tamper-proof screws and a real padlock mechanism — the only real lock, not a plastic cover. Quick release: unlock, flip, grab your card in under 2 seconds. Installs in under 5 minutes with a screwdriver.

One-time purchase. SGD 19.90. Top up $120, leave it in, forget about it.

BUY MOTOLOCK — $19.90

How Much Does an OBU Lock Cost in Singapore?