News | Trek To Release Two New Models, Procaliber SL & TopFuel

Low behold, Trek are not only set to release two new models, but one is actually going to replace the bike we all know and love; the Superfly! The Procaliber SL is aimed at XC racers, with ‘SL’ standing for super light. Some of the color schemes are a little rash, but nonetheless, we’re excited for the release of these well priced bikes!

The TopFuel

The TopFuel, which is set to take the throne of the full-suspension XC race bike, offers 100mm of travel in both aluminum and carbon. Being a cross-country bike where speed and efficiency matter, Top Fuel gets Smart Wheel Size for the fastest wheel that fits. Larger sizes from 17.5 and up get 29” wheels while the 15.5 gets more proportional 27.5” wheels. Trek have issued these Q+A’s:

So how is the TopFuel going to be any different to the Superfly?
In short, the bike is more capable without sacrificing any of its lightweight speed. The most notable difference is the suspension layout. While Superfly FS used a swing link and fixed shock mount, Top Fuel uses an EVO link and Full Floater, which attaches the shock to two moving points. This gives our suspension engineers the ability to further fine tune the spring rate for better performance across a wider variety of terrain. Top Fuel does still use Trek’s Active Braking Pivot. Other notable differences include: Boost 148/110 hub spacing, Smart Wheel Size, and Control Freak cable management.

Why does Top Fuel feature an EVO link instead of a swing link?
Our one-piece EVO link allows us to mount the shock to the Full Floater chainstay mount for better suspension tuning and it provides extra frame stiffness.

Is this the same bike Trek Factory Racing was riding earlier in the season?
Our Trek Factory Racing squad has been riding and testing several prototype and early production models since the beginning of the race season in February. This is the culmination of all that testing and feedback.

How much travel does Top Fuel have?
Top Fuel has 100mm of XC-tuned travel.

How much does the frame weigh?

The frame weighs 1900g with all hardware, paint, and shock.

Is the frame Di2 compatible?
Di2 will cleanly integrate with any carbon Top Fuel frame thanks to our Control Freak cable management system and a battery that’s attached to the water bottle mounts.

Can I run an internally-routed dropper post?
Yes! Control Freak cable management system allows riders to internally route any combination of cables or hoses for a clean, customized set-up.

Spec

Price: Starting at €2999 for the lowest model
Frame: Alpha Platinum Aluminium
Front Suspension: Fox Performance 32 Float
Rear Suspension: Fox Performance Float
Wheels: Bontrager Mustang Elite Tubeless Ready
Cassette: Shimano HG50
Front Derailleur: Shimano Deore
Rear Derailleur: Shimano Deore XT
Brakeset: Shimano Deore
Handlebar: Bontrager Race Lite
Seatpost: Bontrager Rhythm Elite

The ProCaliber

Is the IsoSpeed decoupler the same one found on the Domane?
The IsoSpeed decoupler on the Procaliber SL is similar to the decoupler on the Domane, but it’s been tuned specifically for the rigors of off-road use, as well as for use with a traditional 31.6 seat post rather than a seat mast system.

What wheel size is on Procaliber SL?
Being a cross-country bike where speed and efficiency matter, Procaliber SL gets Smart Wheel Size for the fastest wheel that fits. Larger sizes from 17.5 and up get 29” wheels while the 15.5 gets more proportional 27.5” wheels.

What does “SL” stand for?

Super Light.

How much travel does the fork have?
100mm.

How much rear travel does IsoSpeed provide?
Procaliber SL is a hardtail and hardtails don’t have rear travel. However, IsoSpeed does allow for compliance through the seat tube. There’s a key difference in how IsoSpeed performs vs “soft tail” designs. Most soft tails gain vertical compliance through the seatstays, but the compromise is a loss of overall frame stiffness. Trek’s IsoSpeed decoupler allows the seat tube to pivot and flex independently of the seatstays, gaining energy-saving vertical compliance without compromising stiffness and pedaling efficiency. It’s a smarter way of smoothing out the trail. Depending on the magnitude of the impact, rider weight, and riding style, a rider could experience up to 11mm of compliance as measured from saddle to rear axle.

How much more vertically compliant is the frame than the Superfly SL?
Our advanced analysis team has confirmed that Procaliber SL is 30% more vertically compliant than the previous Superfly SL which was already engineered to be a very compliant bike. The Procaliber SL is 70% more vertically compliant than the existing Superfly which will be comparable to other hardtail competitors.

How much does the frame weigh? How much weight is added by IsoSpeed?
The 17.5” Procaliber SL frame with paint and hardware weighs 1012 grams, about 100g more than the Superfly SL. Our riders confirm that the 30% increase in vertical compliance is worth the 100g weight increase.

Does Procaliber SL feature front and rear Boost hub spacing?
Yes! Procaliber SL’s equipped with 29” wheels benefit from both Boost110 up front and Boost148 in the back. This gives Procaliber SL stiffer wheels for maximum efficiency and control while also allowing us to shorten up the chainstays and provide more tire and chain ring clearance.

Does the fork have G2 Geometry?
Yes. All 29er-equipped Procaliber SL models feature forks with a 51mm offset for the best 29er handling.

Is the frame Di2 compatible?
Di2 will cleanly integrate with any Procaliber SL frame thanks to our Control Freak cable management system.

Spec

Price: Starting at €2999 for the lowest model
Frame: OCLV Mountain Carbon
Front Suspension: RockShox Reba RL
Rear Suspension: N/A
Wheels: Bontrager Mustang Elite Tubeless Ready
Cassette: SRAM XG-1150
Front Derailleur: N/A
Rear Derailleur: SRAM GX
Brakeset: Shimano Deore
Handlebar: Bontrager Race Lite
Seatpost: Bontrager Rhythm Elite

For more info, visit: trekbikes.com

Words & Photos: Trek Bikes

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