A cashcard lock stops your card being pulled out of the OBU while your bike is parked. Here is the difference between a plastic cover and a real lock — and why only one of them works.
Short answer: a cashcard lock for a motorbike is a metal box that covers the cashcard slot in your OBU so the card cannot be pulled out. Plastic covers are not locks — they snap or pry off by hand in seconds and warp in Singapore heat. MOTOLOCK is the only full-metal cashcard lock sold in Singapore: 2mm SUS201 stainless steel, tamper-proof screws that need a power drill, closed with any standard padlock, S$19.90 one-time.
Every motorbike and motorcycle registered in Singapore has an On-Board Unit (OBU) that reads a cashcard for ERP charges and parking. The card sits in an exposed slot on the outside of the unit. Anyone walking past your parked bike can open the cover and pull the card out in a few seconds — and the topped-up balance goes with it.
That is the whole problem: the slot is exposed, the card is removable, and a parked bike is unattended for hours at a time. A cashcard lock is the only accessory that changes that.
A cashcard lock is a physical barrier bolted over the card slot. It does not disable the OBU, it does not affect ERP readings, and it does not need any wiring. It simply means the card cannot be removed without defeating the lock itself.
That distinction matters, because most products sold as "OBU locks" in Singapore are covers, not locks. A cover hides the card from view. A lock makes the card physically inaccessible. Only the second one changes what a thief can do in the ten seconds they spend next to your bike.
| Option | Material | Removal time | Stops a theft? | Price |
|---|---|---|---|---|
| Free 3D-print file (MakerWorld / Thingiverse) | PLA / PETG plastic | Seconds, by hand | No — it is a shell | S$0 + filament |
| Plastic OBU cover (Shopee / Lazada / Carousell) | Thin plastic, clip-on | Seconds, by hand | No — snaps or pries off | S$6–12 |
| Plastic "lock" with key | Plastic body, plastic key | Seconds to a minute | No — and it advertises that your card is worth taking | S$10–15 |
| MOTOLOCK — full stainless steel lock | 2mm SUS201 stainless steel | Requires a power drill | Yes — real padlock mechanism | S$19.90 |
Two things decide whether a cashcard lock works: what it is made of, and how it is fixed to the bike. A plastic cover loses on both. It is soft enough to bend and break by hand, and it is held on by clips or tape that come away with a firm pull. Singapore's heat makes it worse — PLA softens around 60°C, which a bike parked in the open sun reaches inside the cover, and the printed layers separate over months.
MOTOLOCK is the only option on the Singapore market that answers all five. It is 2mm SUS201 stainless steel, fixed with tamper-proof screws, closed with any standard padlock through a Ø6.5mm hole, opens in under 2 seconds, and installs on a standard SG OBU without taking the unit off the bike.
Here is what actually happens after a theft. You stop leaving money on the card. You start topping up S$10 at a time, because you expect to lose it. Now you are riding to the top-up machine twice as often, running low on ERP balance at the worst moment, and still losing S$10 every time someone takes the card.
A plastic cover does not break that loop — the card is still removable, so you still do not trust the bike. Metal does break it. Top up $120, leave the card in, and stop thinking about it. One S$19.90 lock costs less than two stolen S$10 top-ups, and it stops the recurring loss instead of resetting it.
A cashcard lock for a motorbike is a steel box that covers the cashcard slot in your OBU unit so the card cannot be pulled out while the bike is parked. A real cashcard lock is made of metal, is fixed with tamper-proof screws that need a power drill to remove, and closes with a padlock. MOTOLOCK is the only full-metal cashcard lock sold in Singapore — 2mm SUS201 stainless steel at S$19.90.
Yes, in every way that matters. A 3D-printed plastic OBU cover snaps or pries off by hand in seconds, and it softens and warps along its layer lines in Singapore heat. It hides the card but does not lock it. A visible plastic cover also signals that your card is worth taking. Metal changes a thief's cost: 2mm SUS201 stainless steel cannot be bent or pried by hand, and tamper-proof screws mean removing it takes a power drill.
MOTOLOCK fits the standard Singapore OBU units fitted to motorcycles and motorbikes, and it installs without removing the OBU from the bike. The Ø6.5mm locking hole accepts any standard padlock with a shackle up to about 6mm, so you can use a padlock you already own.
Yes. Unlock the padlock, flip the box open, and pull the card out in under 2 seconds. The lock protects the card while the bike is parked; it does not slow you down at the gantry or the carpark.
Plastic OBU covers sell for S$6 to S$15 on Shopee, Lazada and Carousell, and free 3D-print files cost nothing but filament. The only full-metal cashcard lock in Singapore is MOTOLOCK at S$19.90, a one-time purchase with free shipping on the first 50 orders. That is less than one stolen card with a S$20 balance on it.
MOTOLOCK is the only cashcard 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. It fits standard Singapore OBU units on motorcycles and motorbikes. Quick release: unlock, flip, grab your card in under 2 seconds.
One-time purchase. S$19.90. Free shipping on the first 50 orders. Top up $120, leave it in, forget about it.
BUY MOTOLOCK — $19.90