Compatibility note: The HG MTB freehub body on this hub is not compatible with an HG Road 12-speed cassette because the HG MTB freehub body is shorter.
The Strummer HM-350 Boost delivers high performance in its class with 114 POE (3.16° engagement) from its 3-teeth, 6 pawls mechanism, producing an instant response with a distinctive sharp wasp-like buzzing sound.
Precisely manufactured using a combination of AL6061-T6 & AL7075-T6, this hub is designed for strength, durability, and consistent performance. Various options and accessories are available to suit the configuration needs of modern bicycles.
Specifications
| Category | Details |
|---|---|
| Front hub | 15 × 110 mm (Boost), 32H, 14G, 158 g |
| Rear hub | 12 × 148 mm (Boost), 32H, 14G, 272 g |
| Cassette | Hyperglide (compatible with HG MTB) |
| Brake | 6-Bolt disc (ISO) |
| Material | AL6061-T6 body, AL7075-T6 axle |
| Bearings | 2 front, 4 rear (sealed) |
B2B Information (for Dealers)
Contents per carton: 20 sets
Rear Hub (Freehub) Maintenance Note
Grease lubricates the parts that rub against one another in the freehub mechanism of the rear hub, helping reduce friction and wear. Removing all the grease solely to obtain 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.
Replacement bearing specifications
| Position | Bearing code | Quantity |
|---|---|---|
| Front hub | 18307-2RS | 2 pcs |
| Rear hub (total) | 6902-2RS | 4 pcs |
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 10×142 mm rear end cap for HM-350 Boost SKU: ADT-00044BK |
QR 10×142 mm rear configuration. Check the rotor and caliper positions after installation. |
