The Strummer CW-900 Series is manufactured with high precision using CNC machining to achieve a lightweight design while maintaining a strong and rigid structure. Each unit undergoes anodizing to improve resistance to corrosion and long-term wear, followed by precision finishing on the chainring teeth.
This finishing process ensures a more precise tooth profile, more efficient power transfer, and a premium appearance that lasts longer than chainrings without detailed finishing.
Available in two pattern variants:
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CW-900A
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CW-900B
Provides appearance flexibility to match the character of the bicycle and the rider's preferences.
Technical Specifications
Material:
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Crank & Chainring: Aluminium Alloy AL6061-T6 (CNC Machined, Anodized, Precision Finishing)
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Spindle (Axle): Steel
Product Weight:
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910 grams (total set including preload bolts)
BCD (Bolt Circle Diameter):
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144 mm (5-Bolt)
For Fixed Gear / Single Speed Only
This crankset is specifically designed for fixed gear (fixie) and single-speed drivetrains.
Uses the following configuration:
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Fixed-gear chainring
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Single-speed / fixed-gear chain
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Cog (threaded sprocket) on the rear hub
A single-speed / fixed-gear chain is required.
⚠ Important Warning
Not compatible with multi-speed systems.
This means:
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Cannot be used with a cassette sprocket
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Cannot be used with a freehub body
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Cannot be used with a front or rear derailleur
The rear system must use a threaded cog on a fixed-gear hub, not a cassette.
