Campagnolo 4 Bolt


Delivery time: 4-5 Week, All power meters are built to order.

PowerMeter Circuit Board *

Cranks *

Chainrings *

Bundle PC8

None Red +$500.00 Black +$500.00 Silver +$500.00
Yellow White

Delivery time: 4-5 Week, All power meters are built to order.

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With Campagnolo Record® level performance, the amazingly smooth C.U.L.T.® Ceramic bearings, and lightning-fast shifting of the Campy chainrings, SRM has a truly seamless option for Campy fans using the EPS® electronic or mechanical shifting component groups.

At first glance, the unidirectional carbon fiber crank arms look similar to the Campy Record crankset, but look closer to notice a complete removal of the carbon fiber spider arms normally attaching the chainrings to the crank arm. Using the same carbon layup process and exacting specifications, the SRM-Campagnolo PowerMeter matches any Campagnolo drivetrain. Available with dual BCD 145/112, accommodating both standard and compact chainrings.

On top of that, the PowerMeter offers the freedom to install either 11-speed or 12-speed compatible Campagnolo chainrings, giving you the freedom to choose what you want and upgrade whenever you want.


SRM PowerMeter 9 – The Next Generation

SRM Spider PowerMeters are the Origin of mobile power measurement. Since 1986 we have continuously refined our PowerMeters to meet ever-higher standards in technology, accuracy, and reliability. For that reason, our PowerMeters are widely seen as the Gold-Standard for training with power.

Our 9th generation Spider PowerMeter takes our proven formula and updates it with modern features. The result is a PowerMeter that is easier to use, even more accurate, longer-lasting, and has improved connectivity.

Thanks to a combination of angle and torque measurement, the PM9 is now able to measure with higher accuracy in very low cadence situations and oval chain-rings do no longer have an impact on the recorded data. The integrated temperature sensor allows for maximum accuracy in changing conditions. Users are now able to show L&R balance, as well as combined Pedal smoothness.

PowerMeter 9 comes with many usability improvements. First is the Magnet-less cadence mode, which allows you to use the PowerMeter without any cadence magnet.
PowerMeter 9 can be used with ANT+ and Bluetooth LE. It connects to pretty much any head unit and comes with a mobile App. The App gives you access to live torque data, battery status information, firmware updates, and much more.

Picture shown is for illustration purpose only. Actual product may vary due to product enhancement.


Additional information


±1% (PM9), ±2% (PM7)

Cycling dynamics (PM9)

Combined Pedal Smoothness, Left/Right Balance


Cadence Magnet (PM7), Magnetless Cadence (PM9)


ANT+ (PM7 & PM9), Bluetooth (PM9)


>100h – Rechargeable via magnetic charger

Bolt Circle Diameter

145 / 112 mm


145.5 mm


24mm (Ultra Torque)


780g (incl. Crank, PowerMeter, Chainrings)


2 Years