CycleOps PowerTap is the precise instrument that gives you access to real-time performance measurements and is accurate to within +/- 1.5%.

Nobody likes wires.
The PowerTap SL 2.4 is the first wireless power meter on the market. It combines the lightweight reliable SL hub with a 2.4GHz transmission. Hub to handlebar...no strings attached!

• Wireless 2.4 GHz. transmission.
• USB Download.
• Coded heart rate.
• Hub weighs a mere 416 grams.
• Available in Shimano and Campognolo Alloy freehub body.
• Available in 20, 24, 28, 32 hole configurations.
• All-black hub available only in 24-hole configuration.
• Winner of 2006 Euro Bike award.