Tuesday, July 21, 2015

Uncompromising Cross Country Performance From An Old Classic

Brand New 2016 Trek Procaliber SL Gets IsoSpeed Decoupler

Ever since Trek’s clever IsoSpeed Decoupler was unveiled on the Domane it seemed like a natural evolution would be to migrate it to hard tails. That’s exactly what Trek has done after first outfitting their Boone cyclocross bike, and now the new Procaliber SL.

The IsoSpeed Decoupler involves detaching the top tube from the seat tube and then joining the two together with a pivot that allows for up to 11mm of 'compliance'. Trek is careful not to use the word 'travel' in their description of the technology – after all, this is still very much a hardtail, and the rear end doesn't move in the way a traditional full suspension bike would.

Trek states the frame ends up about 100g heavier than the Superfly SL, with a Procaliber SL 17.5″ frame with paint and hardware measuring 1012g. Given the choice, Trek claims their racers prefer the 30% better compliance of the Procaliber SL over the Superfly SL even with the weight penalty. Trek puts it out there that the Procaliber SL is 70% more compliant than competing hard tails.

Updates don’t stop at the ISO Speed. Boost 110/148 spacing makes an appearance here, along with Trek’s new Control Freak cable routing.

With up to 54 different possible ways to run cables, a big enough access port to install or swap cables without too much headache, and a zip-tie port to keep everything quiet, and those wanting or needing to run an external rear brake hose have the option with super simple cable-tie slots on the downtube.


OCLV Mountain Carbon, IsoSpeed, E2 tapered head tube, MicroTruss, Control Freak internal control routing, Carbon Armor, balanced post mount brake, PF92, Boost148 & G2 Geometry on 29ers

Front suspension
RockShox RS-1, Solo Air, Accelerator damper, XX Sprint remote lockout, Predictive Steering 110, E2 carbon tapered steerer, G2 Geometry w/51mm offset on 29ers, 100mm travel

DT Swiss XMC1200 Carbon, tubeless strips & valves, 15mm front, 12mm rear, Predictive Steering 110, (Boost148 on 29ers)

Bontrager XR1 Team Issue, Tubeless Ready, 120tpi, aramid bead, 29x2.00" (Bontrager XR2 Team Issue, Tubeless Ready, 120tpi, aramid bead, 27.5x2.20")

Shimano XTR, 11 speed

Rear derailleur
Shimano XTR, Shadow Plus

Race Face Next SL, 32T

Shimano XTR, 11-40, 11 speed

Shimano HG900

Bontrager Montrose Pro, carbon rails

Bontrager XXX, OCLV Carbon, 31.6mm, 5mm offset

Bontrager XXX, OCLV Carbon, 31.8, zero rise

Bontrager XXX, OCLV Carbon, 31.8mm, 7 degree

FSA IS-2 carbon, E2, sealed alloy cartridge

Shimano XTR Race hydraulic disc

ESI Chunky

Come to Bumstead's Bicycles for all your cycling needs.
We are located at 1038 W. 4th St in Ontario, CA.
You can reach us by phone at (909) 984-9067

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