UCB Speedcage Full Ceramic Carbon Pulley Carbon Cage Rear Derailleur Pulley Upgrade 11-15T Shimano

Sale price$598.96
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Want to save 25 watts at 50kph?

Yes, you can. I've done it, and I've proof.

What did I use? Simply, Ultimate Ceramic Bearing's (UCB) Speedcage.

The UCB Speedcage (Supertec Hybrid, the base level model which I bought) seems to have saved me 25 watts to hit roughly the same top speeds of 52.8 and 52.9kph between two rides.

Take a look at this screenshot of my Garmin Connect data below:

Before and after installing UCB Speedcage. Take a look at the speed and power differences, and also heart rate. Before and after installing UCB Speedcage. Take a look at the speed and power differences, and also max heart rate. You'll see that even though Max HR and Max Speed is almost the same, the Max Power is very different.It could also be together with the combination of the better fitting Suplest shoes...

Anyway, to hit 52.8kph took about 734 watts for the "Flintstones" ride . Max avg power (20 min) is 113 watts. Avg speed is 26kph.

In the earlier "Under Pressure" ride, before using Speedcage, it took me about 759 watts to hit 52.9kph. Max avg power (20 min) is 134 watts. Avg speed is 25.8kph

Long story short, Speedcage makes a difference!

I know many cyclists who spend $200-300 on aero helmets that save 5 watts at 50kph.

Why not just get a Speedcage that could probably save you 25 watts at 50kph?

Granted, my test is done not under a controlled lab environment. But both rides were done on the same route, with the faster one done during a much hotter mid-afternoon. I'd like to think that I actually perform better when it's not so hot...

But yes, if you're hunting to prevent power loss and save watts, look at the UCB Speedcage. Before you install them, do a ride or two on your usual route, and then compare the difference after that. I think you'll be very pleased.

What I've noticed immediately after installing Speedcage was that:

  1. Pushing off from zero didn't need as much effort.
  2. After getting used to needing to use less effort to cruise (felt too easy in my usual gear)... I found myself using one gear harder after a week for my usual cruise speed.

Technically... my 11 speed drivetrain sort of becomes "12 speed", eh?
Again, if you're looking to save watts or prevent power loss, have a look at the UCB Speedcage, and get one yourself today!


Model Spec:

Approx 37 seconds big pulley free spin by hand.

Probably free spins shorter than the titanium pulley with full ceramic bearing due to this carbon pulley being lighter and having a lower freewheel effect.

Cage Plates: Full carbon 2mm 3k naked finish

Pulleys: CNC carbon, full CNC, natural finish

Bearing caps: Black anodized, CNC

Hardware: Alloy 7075 bolts and nut (pulley)

Bearings: Full ceramic, Zirconia Races, (c3),  Si3N4 ceramic balls (G5 grade)

Weight : 46 grams

SPEEDCAGE® UCB bring you our redesigned SPEEDCAGE® SC-1 for SHIMANO Ultegra mechs 6700/6800/6870 and DuraAce 7900/9000/9070.

UCB bring you our redesigned SPEEDCAGE®  for SHIMANO Ultegra 6700/6800/6870 and DuraAce 7900/9000/9070.

Cnc alloy 7075T cages, with cnc alloy jockey wheels and UCB's SuperTEC, NanoTEC or Full ceramic bearings installed. 11T top pulley, and 15T lower, enhance the chain flow through the rear mech, and with less chain friction due to reduced chain angle run over the pulleys.

We rely on 7075T Alloy cages, for precision fit, stiff shifts, and great looks.the cage parts are easily removed and seperate, for any replacement repairs

Coupled with a choice of our legendary Full ceramic, superb NanoTec ceramic, or our excellent new SuperTec hybrid ceramic bearings give the mech new life!. Easy install, with two allen keys, the cage has 3 tension spring positions to tune the chain tension to perfection. Crisp, stiff shifting on all systems (Shimano 10/11 speed) with a SRAM option to follow soon.

Max lower sprocket 32T

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