Bruni open frame design with oversize high modulus ICE tubing

                (click on logo)

Eccentric-less design with BB30 bottom brackets (adapters available for standard BBs)

On engineering testbed:

   Eccentric replaced by BB30.  Large "bash ring" for aesthetics. 

 

Brakes - disc only, front and rear.  Zona reduced weight calipers available with light weight Hope 160 mm rotors. Hope 203 mm vented rotors available for extreme service

                

Click on images for larger view

Low mount rear disc caliper mounting with Paragon Machine Works

Ti mounts/drop outs  - accommodate standard IS adapters for 160 mm to 203 mm rotors     (click on logo)

	Independent stoker stem adjustment
	Zona Di2 with 50 X 32 front, 11 X 36 rear in final stages of development (testbed photos below).  Dura Ace bar-end or standard Dura Ace & Ultegra Di2  brake lever-shifters available.  Multiple crankset options available.

 

         

	Dura Ace rear derailleur upgraded with Yumeya SGS long cage carbon fiber side plates for 11 X 36 cassettes.  Ultegra SGS version in work.  Yumeya SGS available  (Click on image) until Zona version completes testing.
	Recommend Zona Di2 seat tube mounted Li-Ion battery.  Various mounting options (including spare tube bag under saddle, seat tube/seatpost mounting with charging connector) available and Low Self Discharge NiMH batteries in place of Li Ion.  Zona provides Ultegra Di2 electrical/mechanical interface.

               

Shimano Ultegra Di-2 option available NOW.