Stages Cycling Cannondale SI HG Power Meter Crank Left Only (2nd Gen)

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Looking to take your riding to the next level by integrating a power meter into your training and racing? The choice of pro and amateur riders alike, this Stages Cycling Cannondale Si HG Power Meter Crank Left Only (2nd Gen) will transform any bike equipped with the Cannondale Si chainset into an elite level power training tool.

Stages Cycling Cannondale Si HG Power Meter Crank Left Only (2nd Gen)

The Stages Cycling Cannondale Si HG Power Meter Crank Left Only (2nd Gen) allows you to measure your truest metric of cycling performance. Power, unlike heart rate or cadence, remains relatively unaffected by outside conditions such as temperature, wind speed, road surface and gradient meaning that it is the best way of accurately measuring your cycling output. This is the reason why the vast majority of the professional peloton use power meters, as the measurement that shows true, changes in fitness over time. Power also provides the most accurate gauge of real-time performance, allowing you to tailor your race performance for optimal output through every stage.

The Cannondale Si Power Meter Crank Arm is incredibly lightweight only adding 20 grams to the base crank arm, however its benefits are unfathomable. The coin cell battery powered reader has a battery life of 200 hours. This long lasting battery life is coupled with a superb power range of 0-199 watts and a cadence range of 30-220RPM. These ranges, measured to an accuracy of ±2, allow for the most accurate reading available, allowing you to tailor your race or training plan exactly.

The power meter works through an accelerometer based cadence measurement, which doubles the power reading of the single crank arm to give you an accurate reading. This is why the Stages Cycling Cannondale Si Power Meter Crank Arm only included the left arm, thus cutting down on the large weight penalty that other power meters often come with.

The crank is compatible with the majority of frames and Cannondale Hollowgram Si cranks. In terms of device compatibility the Stages Cannondale Si Power Meter Crank Arm runs the gambit as it is compatible with ANT and Bluetooth smart ready devices. The range of software that it can work with is wide ranging too. Strava, Training Peaks, Garmin Training Center alongside many others, all work with the Stages set up, allowing it to seamlessly integrate into any training or racing set up. Overall this is an essential piece of kit for any rider looking to step their training and racing up a notch.

Is my bike compatible with Stages Power Meters?

To help find your current crank model, check the inside of the crank arm for the model and length.

The next step is to check the power meter's compatibility with your frame; if the space between your crank arm and seat stay fits a 10mm allen wrench between 5cm and 12cm from the centre of your bottom bracket, this should be compatible.

See guide below:


Still unsure? Contact us here for more information!

  • Accuracy: ± 2
  • Weight: Only adds 20 grams to base crank arm
  • Battery life: 200 hours (coin cell: CR2032)
  • Tool free battery replacement
  • Active temperature compensation
  • Accelerometer based cadence measurement
  • Wireless firmware upgrades
  • Power range (watts): 0 to 1999
  • Cadence range (rpm): 30-220
  • Frame compatibility: Most frames, contact us for details
  • Crank compatibility: Cannondale Hollowgram Si Cranks
  • Device compatibility: ANT , Bluetooth Smart ready
  • Software compatibility: Training Peaks, Strava, Garmin Training Center and others


UK Delivery Options

Free Delivery on all orders over £30

Estimated delivery within 4 working days (a delivery charge of £1.99 for orders under £30.00 will apply)

CollectPlus Delivery - £1.99

Have your order delivered to your local shop for just £1.99! For Highlands and Islands, please allow up to 5 working days. Orders can be shipped to UK CollectPlus locations specified on the website where they will be held awaiting collection for a period of 10 days.

Orders placed are normally dispatched within 2 working days.

Priority 1st Class Delivery - £2.99

Estimated delivery within 2 working days.

Next Working Day Delivery* - £4.99

A guaranteed tracked courier delivery, place your order before 3pm, deliveries are made Monday to Friday.

Saturday pre 12 Delivery - £4.99

Saturday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Saturday pre 12pm by courier. Package must be signed for upon delivery.

Sunday pre 12 Delivery - £4.99

Sunday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Sunday pre 12pm by courier. Package must be signed for upon delivery.

Reserve and Collect** - FREE

Reserve & Collect is available on all items marked 'Collection'. It is a FREE delivery option that allows you to collect your order from either our Sigma Sport Store, Hampton Wick or our Reserve & Collect location in Esher. Just select the Reserve & Collect button in the basket.

** Reserve and Collect Collections - Clothing, parts and accessories: Next day. Orders placed on Friday, Saturday or Sunday will be available for collection after midday on the Monday (excluding Bank Holidays). Bikes: 4 days if in stock at store, collect in up to 7 days (sometimes quicker) if in stock at warehouse.

* Next Working Day delivery is only available on items in stock in our warehouse and excludes pre- order items. Next Day refers to the next working day, Bank Holidays will add an extra working day to the estimated delivery lead times. UK next day excludes Saturday deliveries. This service is not available to some remote postcode areas. Please contact us for help.

London Same Day (Order Before 1pm)

We offer a Same Day delivery service into London. The cost is £25.00 under 2Kg and £35 over 2Kg. Place your order before 1pm, deliveries are made Monday to Friday. Please note this option excludes bicycles.

More information on our Same Day delivery options.

Bike Deliveries

All our bikes are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for despatch. All you have to do is add the pedals, rotate and tighten the handlebars. Typically we can deliver your bike in 4 - 5 working days.

Deliveries are made Monday to Friday on a pre-12pm delivery. One of our customer service team will be in contact to arrange a convenient day for delivery.

More information on all our UK delivery options.

International Delivery

We ship to over 100 countries using Tracked Post or DHL for fast and reliable deliveries. To see delivery options and delivery times, please add your items to the basket and proceed to the checkout.

International customers have 30 days from their order date to return your order. Goods must be returned in new condition with all original packaging intact, undamaged and tags attached. For full details, see this link.

Free UK Returns

We offer a free returns service for our UK customers. Sigma Sport will happily refund or exchange any item purchased at Sigma Sport, excluding Sigma Sport gift vouchers and personalised products except when faulty.

More information on the Sigma Sport returns procedure.

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