For the latest-generation option, see Hub Strummer HM-380 Boost Gen-2. Specifications and compatibility may differ.
Compatibility note: The HG MTB freehub on this hub is not compatible with 12-speed HG Road cassettes because the HG MTB freehub body is shorter.
Experience the ultimate mountain biking performance with the Strummer HM-380 Boost! With an exceptionally fast engagement angle of 3.16°, supported by a six-pawl mechanism with 3 teeth and an impressive 114 engagement points, you are ready to tackle any terrain at incredible speed.
Made from premium materials, every Strummer hub is precisely engineered using a combination of AL6061-T6 and AL7075-T6 alloy, then undergoes rigorous finishing and anodizing processes to meet our high standards. A wide range of options and accessories, including axle sizes, spoke-hole configurations, disc brake rotor mounts, cassette systems, and colors, makes it easy to customize your bike to suit your personal style.
Elevate your mountain biking experience with Strummer, a hub designed for speed, performance, and style!
Specifications
Front Hub: 15 x 110 mm, 32 holes, 14G spokes, 172 grams
Rear Hub: 12 x 148 mm, 32 holes, 14G spokes, 297 grams
Freehub Body: 6-pawl design, compatible with HG MTB cassette sprockets
Braking Mechanism: Compatible with ISO 6-bolt disc brake rotors
Material: AL6061-T6 body & AL7075-6 axle
Bearings: 2 sealed front bearings & 4 rear bearings
B2B Information (for Dealers)
Units per box: 20
Rear Hub (Freehub) Maintenance Note
Grease lubricates the moving parts of the freehub mechanism in the rear hub, helping to 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.
2021 Polygon Xtrada 5
HM-380 Boost Gen-1 requires a 15×110 mm thru-axle fork and a rear frame compatible with the 12×148 mm hub configuration. The front hub is not suitable for a 100 mm QR fork or a 100 mm thru-axle fork. Check the specifications of your 2021 Xtrada 5 unit with a dealer before purchasing.
Compatibility with Polygon Cascade
HM-380 Boost Gen-1 requires a 15×110 mm thru-axle fork and a rear frame compatible with 12×148 mm. The front hub is not suitable for a 100 mm QR fork or a 100 mm thru-axle fork. Check the year, variant, and size of your Polygon Cascade with a dealer before purchasing.
