The Shimano Nexus SG-C6011-8R is a premium 8-speed internal gear hub built for urban commuters, city bikes, and everyday riders who want reliable, low-maintenance gearing sealed safely inside the hub shell. With a 307% total gear range, smooth roller brake compatibility, and Shimano's Gear Change Support mechanism for effortless shifting even under load, it's the dependable drivetrain heart of any practical city build.

Highlights

• 307% gear range: Eight well-spaced internal gears give you plenty of spread for flat urban riding and moderate hills without any external derailleur to snag, adjust, or expose to the elements.
• Gear Change Support mechanism: Shimano's proprietary design enables smooth, low-effort shifting even when pedalling under high chain tension — no need to ease off to change gear.
• Needle bearing internals: Needle bearings throughout the hub increase durability and mechanical efficiency, contributing to a longer service life compared to standard ball-bearing designs.
• Roller brake ready: The integrated roller brake mount accepts Shimano Nexus roller brakes for powerful, weather-resistant stopping that won't fade in wet conditions.
• Sealed internals: All gearing is enclosed within the hub shell, keeping dirt, mud, and moisture out for reduced maintenance requirements and consistent year-round performance.
• 36-hole lacing: Standard 36-hole flange provides plenty of options for wheel building across a wide range of rim types.

Internals & Technology

The SG-C6011-8R is part of the Nexus C6000 series, designed for both standard and e-bike use. The improved ratchet design handles high chain tension without issue, making it compatible with the demands of pedal-assist systems as well as conventional drivetrains. The hub body is aluminium construction with a silver finish, and the internal gear assembly is accessed without disturbing the wheel lacing.

Compatibility & Fit

The SG-C6011-8R uses a 10mm bolt-on axle with 132mm over-locknut distance (OLD) — standard city bike rear spacing. Axle length is 184mm. Spoke hole count is 36. Compatible shifters include the CJ-8S20 and CJ-8S40 cassette joints used with Shimano Nexus 8-speed shift levers. Compatible sprockets are the SM-GEAR range. Chain compatibility: CN-NX10 (1/2 × 1/8") or HG 8-speed chain.