You may remember Julian Da Silva’s custom Scott PKi2 Scale from last June. Heading into the race season for the year, Julian of Alex’s Bicycle Pro Shop was looking for the ultimate in electronic integration – which he created himself when he combined a K Edge Di2 system, and Alfine gear indicator, and Fox ICD lockout system all on the same battery. The race season has come and gone, and Julian reached out to us again, this time with an 11 speed upgrade for the PKi2 and a new Scott Scale DWi2 he put together for one of their team riders, Doug Deweese. After seeing and riding Julian’s PKi2, Doug had to have one of his own.
Check out the results, plus how to upgrade a Ki2 system to 11 speed after the break!
In addition to 11 speed, the PKi2 electro wonder bike is running the new Rotor REX1 crank on the new Shimano XTR M987 bottom bracket. Though the swapping of components the weight of the bike has stayed the same at 21.5 lbs.
The biggest upgrade is obviously the addition of one more gear which was made possible with the addition of a Shimano Ultegra 6870 RD. According to Julian, the RD 6870 bolts up to the K-edge Di2 kit exactly the same as the RD 6770. Once the swap was made, Julian made adjustments to the shifting via his laptop with the E-tube system which was all that was needed.
Obviously, if you’re going to run an 11 speed cassette, like the 6800 11-32 the bike is running now, you need an 11 speed compatible freehub. Julian says that Reynolds offers two freehub bodies for the Reynolds XC 29 carbon wheels he was running on the bike. The standard gold freehub body is 33mm long for use with 9 and 10 speed drivetrains. For 11 speed use, they offer a black freehub that is 35mm long and includes a spacer if you are running 10 speed. Add it all together and you have an 11 speed Ki2 drivetrain.
The Dwi2 Scott Scale started life as a 2014 Scale 900 RC frame that was given the Ki2 treatment, though it stays 10 speed and lacks the Fox ICD suspension. Weight for this beauty? 19.1 pounds without pedals.
- 2014 Scott Scale 900 RC
- Rockshox Sid XX WC
- ENVE Carbon Clincher Wheelset
- XX1 Crankset with Rotor QX1 spider 34t and 32t
- Ritchey WCS Cockpit
Tioga Spyder Saddle
- Ultegra 6770 Rear with K-Edge Ki2 retrofit kit
- XG-1099 11-36 Cassette
- Shimano BTR2 9070 Internal Battery
- Shimano XTR M987 brakeset
Julian has been racing his PKi2 Spark all season without issue in the Florida State Championship series which he finished 4th overall in the XC2 19-29 category. As always, thanks to Julian for sending these in, and thanks to Rodney “Too Low” Rodriguez @officialtoolow (@photobytoolow) for the bike shots and the action shot by Mickey Rivera.