Black&White CS-256SL

[JohnnyNT]

So my project has finally reached maturity. It was a lot of firsts for me, first time with hydraulic brakes, first time carbon frame and wheels, first time tubeless, first time CB not shimano pedals. I'm very happy because everything works well so far. Build list below:

Bar Ends: --
Bottle Cage: --
Bottom Bracket: Rotor BSA30+spacer 90g
Brake (Front): Formula R1 with Formula Kool Stop Pads, carbon lever 179g
Brake Disc (Front): Quaxar Axim White 160mm 72g
Brake (Rear): Formula R1 with Formula Kool Stop Pads, carbon lever 196g
Brake Disc (Rear): Quaxar Axim White 160mm 72g
Brake Bolts: 4 M6x15 Ti 10 g
Brake Disc Bolts: 6 M5x10 Ti + 6 M5x10 Al 11g
Cables: Jagwire (13) + niro housing(12-) + jagwire endcaps(3) 28g
Cassette: Sram XX1 10-42 265g
Chain: KMC X11SL with missing link 227 g
Crankset: 516 g
-Crank Arms: Sram S2200 BB30 long spindle 175mm 456g
-Chainrigns: Garbaruk Oval GXP 34T 60g
Derl (Rear):  Shimano XTR RD-M9000GS 222g
Fork: Fox Fit CTD 15mm + Fox Axle 1479+75g
Fork ekspander: In the fork weight
Frame: Carbon Speed CS-256SL 19" + Axle (Alu bottle bolts) 1039+80g
Misc: Spacer alu 5mm 3g
Grips: Extralite Hypergrips+Bar Ends 12g
Handlebar: Carbon Speed B7 680mm 119g
Headset: Nexelo 65g
Pedals: Noname eggbeater (probably 2Ti) 215 g
Seat: Carbon speed SD2  97 g
Seatpost: Carbon speed SP6 31.6/400 193 g
Seatpost clamp:  9g
Shifters: Shimano XTR SL-M9000 right 104 g
Skewers: --
Stem: Kalloy Uno -7* 70mm 91 g
Tire (Front):  Conti X-King 2.2 RaceSport 539 g
Tire (Rear): Conti X-King 2.2 Protection 647 g
Tire stuff: 229 g
Top Cap: Nexelo 16 g
Wheelset: 350s Straight pull 15mm&XX1 ThruBolt + Carbon Speed HR927C + Nipples White + Pillar TB2016 + NoTubes Tape and Duke Valves 670+788 g

Total 8358g

After bike fitting session some changes were made:

Offset noname seatpost +14g
SLR XC Gel Flow saddle +83g

Total 8455g

Will probably need a tad longer stem as well.

I achieved the weight below 8.5 kg which I was aiming for, there is still room to get it sub 8kg without ridiculous spendings.
Hope you like it, more pictures to follow.

 

[cmh]

Hell of a build, and a gorgeous bike! Enjoy!

[Izzy]

That black and white scheme looks freaking sweet. Very nice hardtail build.

What do you think of the Formula brakes so far?

[JohnnyNT]

Well, they still need to settle, but so far so good. Thru axles remove the big problem of Formulas - little spacing for the rotor, you set it once and axles maintain the position, unlike QR. 1.8mm rotors help too. I have comparison only with older XTs and Formulas seem to work comparably well. I'll definitely need to sort the rear axle nut problem out, it started moving on 3km ride to work. Maybe just replace it with https://r2-bike.com/SHIMANO-Nut-M12-for-Thru-Axle-SM-AX75-E-Thru-12-x-142-mm-5g

[Izzy]

ok, thanks for the reply. I've long considered the R1s and didn't realize thru axles improved the spacing issue. Seriously good job on the build - 8.4 kg is awesome

[RS VR6]

Nice ride man. 

You can drop a few more grams by going with some bolt through axles.

[JohnnyNT]

Yes , looking into future upgrades: lighter saddle and seatpost would get me at least 120g, axles 100g, Ti spindles for pedals 60g, top cap & expander 10-20g, Ti bolts for stem 5g. Going sub-8kg is still a bit far, but it's 300g less alltogether.

[Oolak]

Yep. Loving this build man.

Beware when it comes to trying to drop hose last few grams.. It can get pricey. There's definitely a point of diminishing returns.