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Item # SEM0005

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Item # SEM0005


If you take your training seriously, and you're not training with power, then we're not sure how you've made it to Cat 1. Everyone agrees, from the world's greatest cyclists to sports physiologists, that the ability to analyze power output can be more important to your advancement than a coach. Luckily for you, the SRAM S975 Wireless Powermeter is cheaper than a coach's salary and won't yell at you on the false flats. More importantly, the S975 Powermeter System gives you the most accurate power readings on the SRAM market, without sacrificing a stitch of rigidity. Take your performance to the next level, and start training with power.

The SRAM S975 Powermeter is SRM's most sophisticated Powermeter system to date. The S975 features SRAM's integrated, unidirectional-carbon crankarms and RED PG chainrings. For a rigid attachment, the S975 uses a CNC-machined aluminum spider. The result is the holy grail of Powermeters: a race day crankset that feels, looks, and acts like SRAM. You also maintain the hallmark weight savings of SRAM, with the complete Powermeter system weighing in around an ultra-light 806 grams without the GXP bottom bracket. The S975 Powermeter is extremely accurate, operating on the powerful ANT+ wireless system with an expressed accuracy of +/- 2%. The Powermeter is beast-approved as well, with a cadence range of 30-255 rpm and a wattage range from 0-4096 watts, it can handle any output, human or otherwise. This is achieved through the use of eight strain gauges. These are a system of sensors that detect any resistance and vary their output when experiencing applied force. The next step is for the strain gauges to convert this data into electrical resistance so it can be measured. The refinements to the system offer the stellar results that have already made the S975 Powermeter a hit with the pros.

Choosing the SRAM S975 Powermeter provides you with several advantages over other systems. Our favorite one is that the S975 system is compatible with other 10- and 11-speed groupsets. Additionally, you can swap out the RED chainrings for Shimano, Rotor, SRAM and FSA Pro/Super Road chainrings. The SRM S975 Powermeter features a predicted 1400 hours of ride time per battery compared to the 400 hours of battery life of Quarq's S975 system. This means more time in the saddle, and less time worrying about your battery.

The SRAM S975 Powermeter is compatible with various training software such as Training Peaks, SRM, and Strava. The S975 operates wirelessly with ANT+ Sport, and can be used seamlessly with SRM PowerControl 7 and PowerControl VI head units.

The SRAM S975 Wireless Powermeter is available in four crankarm lengths from 170mm to 177mm, and is available in both standard and compact sizes. The S975 uses the standard SRAM GXP bottom bracket.

Tech Specs

Arm Material:
Arm Length:
170 mm, 172.5 mm, 175 mm, 177 mm
Bottom Bracket:
Not included
BB Type:
Giga X Pipe Team
Claimed Weight:
806 g
Recommended Use:
Power training, Road cycling, Road racing
Manufacturer Warranty:
1 year
Bolt Circle Diameter:
130 mm, 110 mm
Chainring Sizes:
34 50, 39 53

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