The ChamRider DM427 is a mountain bike e-bike with a 1296 Wh battery. That battery is 54% above the median for its class. It also has a 92 Nm hub motor and a top speed of 50 km/h. This bike suits riders who want long range and strong torque at a price 32% below the median.
The DM427 weighs 34.9 kg, which is 2% above the median for e-MTBs. It is not foldable and has no throttle. It is a fast class e-bike, with assist above 25 km/h. You get a lot of battery for the money, but you carry that weight.
What the numbers say
| Spec | This bike | Median for its type |
|---|---|---|
| Battery | 1296 Wh | 840 Wh |
| Weight | 34.9 kg | 34.2 kg |
| Torque | 92 Nm | 80 Nm |
| Estimated range | 74 km | 49 km |
| Price | 1057 USD | 1554 USD |
Questions people ask about the ChamRider DM427
How much does it weigh?
The DM427 weighs 34.9 kg. That is 2% above the median for e-MTBs. It is a heavy bike, so lifting it onto a rack is hard. The weight is the price of that large battery.
How much torque does it have?
The motor delivers 92 Nm of torque. That is 15% above the class median of 80 Nm. It is a hub motor, not a mid-drive. You get strong acceleration from a standstill, but hill climbing may feel different from a mid-drive.
What speed class is it?
The DM427 is a fast class e-bike. It assists up to 50 km/h. That is above the 25 km/h assist limit of standard e-bikes. Check local rules before you ride.
How far does it really go?
The manufacturer claims a range of 100 km. MathBikes estimates 74 km, with a band from 65 to 83 km. That estimate is 26% below the claim. The estimate comes from a formula, not a test. See the range calculator to adjust for your ride.
What does it cost to run?
The price is 1057 USD, which is 32% below the class median. Running costs depend on electricity and maintenance. The battery is large, so charging costs more than a smaller battery. Use the cost calculator to compare long-term costs.
Where it falls short
The DM427 has no published warranty. That is a risk for a bike with a 1296 Wh battery. The battery is a big part of the price. If it fails, you may pay a lot to replace it.
Who should buy it
The DM427 fits riders who want maximum range per dollar. It also suits riders who need high torque for heavy loads. The 180 kg max payload is generous. But you must accept the weight and the lack of a warranty.
- You ride long distances and want a 74 km estimated range.
- You need a bike that can carry up to 180 kg.
- You want a fast class e-bike with a top speed of 50 km/h.
Look elsewhere if you need a warranty or a lighter bike. Also consider a mid-drive motor if you ride steep hills often. The DM427 is a value pick, but it is not for everyone.
