AbsoluteBLACK’s HOLLOWcage will get a Dura-Ace 12-speed improve – or reasonably it guarantees to rework your newest Shimano Dura-Ace or Ultegra Di2 groupset right into a quieter operating drivetrain with the very best shifting but from any low-friction ceramic outsized pulley wheel system. The single-sided, aero-dimpled carbon composite cage and big hole decrease pulley idea are the identical, now up to date with a claimed 40% noise discount as you journey with Shimano’s newest 12sp digital groupsets.
absoluteBLACK HOLLOWcage Shimano 12sp improve
Just over every week in the past, AbsoluteBlack’s distinctive one-armed aero ceramic HollowCage derailleur improve made the leap to 12-speeds for SRAM eTap AXS, with a brand new concentrate on even better noise discount. Now, Shimano’s finest will get the identical quieter remedy. AbsoluteBlack didn’t just like the noise of their chains operating over the cassette & derailleur ruining the peaceable silence of a relaxed street journey, in order that they got down to quiet the drivetrain.
They say a lot of the widespread “clunking noise” you hear whereas using is the chain participating the derailleur pulleys – with inventory plastic/composite pulleys being “fairly loud” and aftermarket alloy pulleys being “even worse”. So AbsoluteBlack developed their patented Silent Xring pulley answer that provides a rubber bumper to dampen the noise & vibration of each bushing of your chain participating the derailleur pulley.
The consequence they are saying is a 5-7dB discount when in comparison with inventory Dura-Ace pulleys – an approximate 40% noise discount. “Practically speaking, the cage becomes very silent… From now on, your ride is going to be more silent than it used to be and you will hear sounds that you haven’t noticed before.”
The one-sided HollowCage improve is alleged to shift “as good as with the original Dura-Ace cage” and is likely one of the lightest outsized pulley cage kits out there available on the market. Technically, this new cage shares lots of the traits of the original HollowCage: aero-dimpled carbon-reinforced single plate cage design, a design with a stiff-mounted 12T higher pulley for exact shifts, a extra versatile decrease 18T pulley (than standard 2-plate format) which might scale back drivetrain friction, fully-ceramic bearings, all made in Europe.
AbsoluteBlack HollowCage Shimano 12sp – Pricing & choices
There are two distinct HollowCage variations to suit Shimano Dura-Ace R9200 & Ultegra R8100 Di2 12-speed derailleurs, appropriate with cassettes as much as 34T max. Each 71g cage improve is out there now for $579 / 499€ / £429 in restricted numbers with black, gold, crimson, titanium silver & PVD rainbow hole decrease pulleys.