For the latest-generation option, see Strummer HM-350 Gen-2 Hub. Specifications and compatibility may differ.
Strummer HM-350 MTB Hub – 114 POE, QR Ready, 6-Bolt Disc
The Strummer HM-350 is an MTB hub with a 114 POE engagement system using a 6 pawls, 3 teeth mechanism. This system delivers a fast pedaling response with a strong, distinctive freehub sound.
This hub uses a combination of AL6061-T6 material for the body and AL7075-T6 for the axle to balance strength, weight, and durability. The standard configuration uses a Quick Release system, with additional adapter/end cap options for several other axle standards.
Product Specifications
| Category | Details |
|---|---|
| Model | Strummer HM-350 |
| Front hub | 5.2 × 100 mm / QR 9 mm |
| Rear hub | 5.2 × 135 mm / QR 10 mm |
| Holes | 32H |
| Spoke | 14G |
| Cassette | HG compatible |
| Brake | 6-Bolt Disc Brake |
| Body Material | AL6061-T6 |
| Axle Material | AL7075-T6 |
| Bearing | Sealed Bearing |
| Front bearings | 2 pcs |
| Rear bearings | 4 pcs |
| Front hub weight | ±171 g |
| Rear hub weight | ±287 g |
| Quick Release | Included |
Spare Parts & Accessories
Adapters, bearings, and supporting components are available/sold separately.
Adapters / End Caps
| Position | Adapter Options |
|---|---|
| Front | 5.2×100 / 12×100 / 15×100 |
| Rear | 5.2×135 / 5.2×142 / 12×142 |
Bearing
| Position | Bearing Type | Dimensions (ID × OD × Thickness) | Quantity | Steel (SKU) | Hybrid Ceramic (SKU) |
|---|---|---|---|---|---|
| Front Hub | 18307-2RS | 18 × 30 × 7 mm | 2 pcs | LAHAR-00013 | LAHAR-00015 |
| Rear Hub | 6902-2RS | 15 × 28 × 7 mm | 2 pcs | LAHAR-00011 | LAHAR-00017 |
| Freehub Body | 6902-2RS | 15 × 28 × 7 mm | 2 pcs | LAHAR-00011 | LAHAR-00017 |
Match the code, dimensions, and seal with the old bearing before purchasing. Hybrid Ceramic is an upgrade option when the type and size are compatible.
Other Components
- Front Hub Axle
- Rear Hub Axle
- Quick Release Skewer
- Plastic retaining ring for pawl
- Freehub body rubber seal
- MTB Gen-1 Hub Service Kit: 6 pawls & springs
Examples of Compatible Bicycles
- Polygon Siskiu D5 2019–2021*
- Polygon Xtrada 5 / 6 2020–2021*
- Trek Marlin 4 2022
*Some models require a 142 mm adapter/end cap. Always check the frame dropout standard before purchasing.
B2B Information (for Dealers)
Box contents vary by variant:
- Glossy Black / White / Front Hub Only (9x100) (SKU: HUB-00119BKWH): 20 pcs
- Glossy Black / White / Rear Hub Only (10x135) (SKU: HUB-00120BKWH): 20 pcs
- Glossy Black / Grey / Front Hub Only (9x100) (SKU: HUB-00119BKGY): 20 pcs
- Glossy Black / Grey / Rear Hub Only (10x135) (SKU: HUB-00120BKGY): 20 pcs
- Glossy Black / Red / Front Hub Only (9x100) (SKU: HUB-00119BKRD): 20 pcs
- Glossy Black / Red / Rear Hub Only (10x135) (SKU: HUB-00120BKRD): 20 pcs
- Glossy Black / Yellow / Front Hub Only (9x100) (SKU: HUB-00119BKYL): 20 pcs
- Glossy Black / Yellow / Rear Hub Only (10x135) (SKU: HUB-00120BKYL): 20 pcs
- Glossy Blue / White / Front Hub Only (9x100) (SKU: HUB-00119BLWH): 20 pcs
- Glossy Blue / White / Rear Hub Only (10x135) (SKU: HUB-00120BLWH): 20 pcs
- Glossy Gold / White / Front Hub Only (9x100) (SKU: HUB-00119GLWH): 20 pcs
- Glossy Gold / White / Rear Hub Only (10x135) (SKU: HUB-00120GLWH): 20 pcs
- Glossy Red / White / Front Hub Only (9x100) (SKU: HUB-00119RDWH): 20 pcs
- Glossy Red / White / Rear Hub Only (10x135) (SKU: HUB-00120RDWH): 20 pcs
- Glossy Titan / White / Front Hub Only (9x100) (SKU: HUB-00119TIWH): 20 pcs
- Glossy Titan / White / Rear Hub Only (10x135) (SKU: HUB-00120TIWH): 20 pcs
- Mat Black / Glossy Black / Front Hub Only (9x100) (SKU: HUB-00119BKBK): 20 pcs
- Mat Black / Glossy Black / Rear Hub Only (10x135) (SKU: HUB-00119BKBK): 20 pcs
- Mat Black / Glossy Black / Front & Rear Hub (9x100/13x135) (SKU: HUB-00120BKBK): 20 pcs
- Glossy Black / White / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070BKWH): 20 sets
- Glossy Black / Grey / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070BKGY): 20 sets
- Glossy Black / Red / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070BKRD): 20 sets
- Glossy Black / Yellow / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070BKYL): 20 sets
- Glossy Blue / White / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070BLWH): 20 sets
- Glossy Gold / White / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070GLWH): 20 sets
- Glossy Red / White / Front & Rear Hub (9x100/13x135) (SKU: HUB-00070RDWH): 20 sets
Rear Hub (Freehub) Maintenance Notes
Grease lubricates the parts that rub against each other in the rear hub's freehub mechanism, helping reduce friction and wear. Removing all the grease just to produce a louder sound is not recommended. Without adequate lubrication, components may wear out or become damaged more quickly, shortening their service life. Use the type and amount of lubricant recommended for product maintenance.
Thru Axle Conversion
The HM-350 Gen-1 can be converted to a 12×142 mm thru axle using an adapter/end cap sold separately. For a 12×148 mm configuration, first use the 12×142 mm adapter, then use the appropriate 12×142 to 12×148 mm conversion adapter. Make sure the final configuration matches the frame and rotor position during installation.
Compatible Adapter References
The following adapters and end caps are sold separately. Match the model, generation, hub position, fork/frame standard, and freehub configuration before purchasing.
| Adapter / end cap | Function and compatibility |
|---|---|
|
QR 9×100 mm front end cap SKU: ADT-00059BK |
Replacement for the included end cap. |
|
12×100 mm front thru axle end cap SKU: ADT-00043BK |
Converts the front hub to a 12×100 mm thru axle. |
|
15×100 mm front thru axle end cap SKU: ADT-00049BK |
Converts the front hub to a 15×100 mm thru axle. |
|
QR 10×135 mm rear end cap SKU: ADT-00044BK |
For compatible non-Boost HM-280/HM-350/HM-380 models. |
|
QR 10×142 mm Gen-1 rear end cap SKU: ADT-00033BK |
Converts the rear from QR 10×135 mm to QR 10×142 mm. |
