BMC URS 01 LT ONE vs Colnago G4-X Shimano GRX 820 2x
Both are gravel bikes at a similar price. Here is what actually separates them.
The short answer
For a typical all-round rider the BMC URS 01 LT ONE comes out ahead (65% against 57%). That is not a universal verdict — change the terrain or the priority and the order can flip.
What actually separates them
- Price
- The BMC URS 01 LT ONE is £102 cheaper — £3,999 against £4,101.
- Weight
- The Colnago G4-X Shimano GRX 820 2x is 1.0kg lighter, which you notice on long climbs more than anywhere else.
- Riding position
- The Colnago G4-X Shimano GRX 820 2x sits you more upright (1.48 stack-to-reach against 1.45). The BMC URS 01 LT ONE is the more aggressive of the two — quicker if you can hold it, harder work if you cannot.
- Tyre clearance
- The BMC URS 01 LT ONE takes 47mm tyres against 42mm — the single most common thing buyers wish they had more of.
- Climbing gear
- The BMC URS 01 LT ONE has the easier bottom gear (20 gear inches against 23), which matters more than weight on anything genuinely steep.
- Shifting
- Only the BMC URS 01 LT ONE has electronic shifting. Crisper and lower maintenance, but it needs charging and costs more to replace.
- Mudguards
- Only the BMC URS 01 LT ONE takes mudguards, which decides whether it can be your winter bike.
Side by side
| Spec | URS 01 LT ONE | G4-X Shimano GRX 820 2x |
|---|---|---|
| Price | £3,999 | £4,101 |
| Weight | 10.5 kg | 9.5 kg |
| Frame | carbon | carbon |
| Groupset | SRAM Rival XPLR AXS / GX Eagle Transmission 1x12 electronic | Shimano GRX 820 2x12 mechanical |
| Stack / reach | 1.45 | 1.48 |
| Tyre clearance | 47 mm | 42 mm |
| Lowest gear | 20 in | 23 in |
| Mudguard mounts | Yes | No |
| Comfort | 66 | 70 |
| Speed | 25 | 34 |
| Climbing | 52 | 62 |
| Value | 1 | 0 |
Neither might be the right answer
This page assumes an average rider. Tell us how you actually ride and we will rank these two against everything else at the price.
Find my bikeRelated comparisons
- BMC URS 01 LT ONE vs Canyon Grail CF SLX 8 Di2
- BMC URS 01 LT ONE vs Cube Nuroad C:62 SLX
- BMC URS 01 LT ONE vs Giant Revolt Advanced Pro 1
- BMC URS 01 LT ONE vs Giant TCX Advanced Pro 1
- BMC URS 01 LT ONE vs Specialized Crux 5 Comp - SRAM Rival XPLR
- Cannondale Topstone Carbon 2 AXS 1x vs BMC URS 01 LT ONE