The Strummer CW-900 series is manufactured with high precision using CNC machining to achieve a lightweight design with a structure that remains strong and rigid. 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 styling flexibility to suit the character of the bicycle and the rider's preferences.
Technical Specifications
Material:
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Crank & Chainring: AL6061-T6 Aluminum Alloy (CNC Machined, Anodized, Precision Finished)
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Spindle (Axle): Steel
Product Weight:
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910 grams (total set including preload bolt)
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) bicycles 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 must be used.
⚠ 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 the fixed-gear hub, not a cassette.
