Description
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Hope EVO fat-bike crankset for a 100mm bottom-bracket frame. This no-spider configuration uses Hope’s EVO modular crank system, but the correct axle, bottom bracket, chainline and chainring setup must be confirmed before ordering.
The key measurement for this version is not just “100mm fat bike.” Hope’s installation information specifies the bearing and over-bearing dimensions for the 100mm-frame configuration. Check those dimensions against your frame and bottom bracket, then confirm the chainline and rear-hub spacing from the applicable chart.
Key specifications
| Item | Listed or documented detail |
|---|---|
| Configuration | EVO crankset, no spider, 100mm fat-bike version |
| Crank lengths | 165mm, 170mm and 175mm listed for this product family |
| Axle | 30mm oversize 7075 aluminium alloy axle |
| 100mm-frame shaft | 165.5mm shaft; Hope’s installation document gives 128.5mm +/- 1mm as the over-bearing width check |
| Chainring interface | Spline mount for a spiderless chainring or compatible spider configuration |
| Listed weight | Family listing starts at 560g for a 170mm crank with axle; exact setup changes weight |
| Price | The LBS currently lists 372.90 USD; Hope’s own no-spider price is approximately 372.82 USD before tax, with regional pricing subject to change |
For the complete configuration, read Hope’s EVO crankset information and installation instructions.
100mm fat-bike fitment checklist
| Check before ordering | Why it matters |
|---|---|
| Bottom-bracket bearing ID | Hope’s instructions require the correct 30mm internal bearing diameter for the crank axle. |
| Installed BB width | Measure the over-bearing width after the BB is fitted. Hope gives 128.5mm +/- 1mm for the 165.5mm shaft/100mm-frame check. |
| Axle length | Do not select an axle from the frame label alone. Confirm the shaft and spacer arrangement in Hope’s BB compatibility information. |
| Chainline | Use the chainline and clearance chart to match the chainring position to the frame and rear-hub spacing. |
| Chainring or spider | This is the no-spider listing. Confirm whether you need a compatible spiderless ring, single spider or another configuration. |
| Crank length | Check clearance and riding position before choosing 165mm, 170mm or 175mm arms. |
Hope’s EVO chainline and clearance chart should be used with the applicable bottom-bracket compatibility chart. If your measurements do not match, pause and ask Hope or a qualified mechanic before buying.
What “no spider” means
This listing is supplied for a spiderless chainring setup rather than a conventional separate spider and chainring arrangement. The spline and lockring interface still need to match the chainring you plan to use. Confirm the chainring size, speed compatibility and offset before assuming the ring will produce the chainline your fat bike requires.
Installation and tools
Hope’s instructions list a 10mm hex, 2.5mm hex and torque wrench among the required tools. The procedure includes checking the BB, installing the crank sub-assemblies, fitting the spiderless ring or spider where applicable, and setting the specified fasteners. Use the current Hope instructions for the torque values and sequence rather than copying a number from another crank manufacturer.
The self-extracting axle/arm interface is a manufacturer-described feature intended to simplify fitting and removal. That does not remove the need for correct bearing fit, spacers, clean splines and a calibrated torque wrench.
Chainline, clearance and fat-bike frames
Fat-bike frames vary in BB width, rear spacing, chainstay shape and chainline requirements. A 100mm BB frame does not by itself prove that every 100mm axle or chainring position will clear the frame. Check the chainring, chainstay and tire clearance in the assembled configuration, especially when using a larger ring or a wide tire.
Weight and Hope’s performance claims
Hope describes the EVO as 15% lighter and stiffer than its previous model and lists laboratory and field testing in its product information. Those are manufacturer claims, not measurements made by The LBS. The published weight is configuration-dependent, so compare complete crank, axle, ring and hardware setups rather than arms alone.
Is it worth it?
The value case is strongest when you need Hope’s modular axle and chainring system, a specific 100mm fat-bike fitment, multiple crank-length options or access to the brand’s replacement parts and color choices. It is not automatically the lightest or best crankset for every fat bike. The price should be weighed against the complete setup cost: bottom bracket, chainring, spacers, tools and any wheel or drivetrain changes needed to achieve the correct chainline.
Who this version suits
- A fat-bike owner with a 100mm frame who has confirmed the 30mm BB bearing and installed-width requirements.
- A builder who wants a spiderless Hope EVO setup and can verify chainline and clearance from the chart.
- A buyer who values modular axle, crank-length and chainring choices and accepts the measurement work that comes with them.
Who should pause before ordering
- Anyone assuming “100mm” alone identifies the correct bottom bracket, axle or chainline.
- Anyone whose BB uses a bearing internal diameter other than the required 30mm.
- Anyone who has not chosen the chainring and confirmed its offset, speed compatibility and clearance.
- Anyone comparing weights without including the axle, chainring, spider or hardware in both setups.
Bottom line
The Hope EVO Crankset No Spider 100mm FatBike is a configurable aluminium crankset for a specific wide-frame application. Its strongest documented benefit is configuration flexibility, not a guaranteed performance advantage. Confirm the BB bearing ID, 100mm-frame dimensions, axle, chainline, ring interface and clearance as one system. If those checks pass, the current in-stock listing is a credible option; if they do not, consult Hope or a qualified mechanic before ordering.
