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Praxis Doon Armset - Black

Praxis Doon Armset - Black

The Praxis Doon Armset represents the pinnacle of professional-level carbon road cycling performan...

Best current price£315.00from Evans Cycles UK

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Evans Cycles UKPraxis Doon Carbon Crankset Black
£4.99 delivery
£315.00
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FrasersPraxis Doon Carbon Crankset - Black - 160mm
Free delivery in 1–3 days
£315.00
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Sports Direct UKPraxis Black Doon Armset, Sports Direct
£4.99 delivery
£315.00
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Product Information

Full details

The Praxis Doon Armset is designed for dedicated road cyclists seeking professional-grade, lightweight carbon components to optimize their power transfer and handling. Engineered with advanced C.R.A.F.T. carbon manufacturing, these arms offer a significant weight reduction at just 342g, though riders must ensure their frames are compatible with the required M30-THRU bottom bracket system before upgrading.

All features

Model Part Number850054960719
BrandPraxis

Extended Product Information

FAQs

What bottom bracket do I need for the Praxis Doon Armset?

This crankset requires a Praxis M30-THRU compatible bottom bracket.

Does this armset come with a power meter?

No, the Doon Armset is a crank arm unit, but it is designed to be compatible with aftermarket 3-bolt power meter spiders and pedal-based systems.

Can I use this on a mountain bike?

The Doon Armset is specifically engineered for elite road cycling use.

How do I remove the crank arm?

The integrated 8mm alloy main crank bolt includes a self-extracting design; simply loosen the bolt with an 8mm hex wrench, and it will pull the arm off the spindle automatically.

Are these arms compatible with SRM 3-Bolt systems?

Yes, the Doon armset is fully compatible with SRM 3-Bolt spider systems.

Troubleshooting

Crank arm feels loose after installation

Ensure the 8mm main bolt is torqued to the correct specification and check that the M30-THRU bottom bracket is properly preloaded.

Difficulty installing the crank into the bottom bracket

Verify that your frame is using a compatible M30-THRU bottom bracket; standard 24mm or DUB bottom brackets will not accommodate the 30mm spindle.

Pros and Cons

Pros

  • Extremely lightweight carbon construction
  • Stiff and responsive power delivery
  • Self-extracting bolt design simplifies maintenance
  • Wide compatibility with industry-standard power meters

Cons

  • Requires specific M30-THRU bottom bracket
  • Higher entry price point due to premium materials
  • Not compatible with standard 24mm bottom brackets

Setup, Compatibility & Care

Installation requires an M30-THRU bottom bracket, which is essential for the 30mm spindle diameter. Users should utilize a high-quality torque wrench to secure the 8mm main crank bolt according to manufacturer specifications to ensure the self-extraction mechanism functions correctly. Regularly clean the crank arms with mild soap and water, avoiding harsh degreasers that can degrade carbon finish. Inspect the 3-bolt spider interface periodically for debris if you are frequently switching power meters or chainrings.

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