From Ars Technica · · 3m
The Specialized Diverge 4 Pro makes rough gravel your playground
This $8,249 gravel bike tackles technical descents and rough trails with a suspension system that actually works.
In brief
This $8,249 gravel bike tackles technical descents and rough trails with a suspension system that actually works. The Diverge 4 Pro's Future Shock 3.3 suspension system dramatically reduces arm fatigue on rough terrain without the compromises of traditional suspension forks. Originally reported by Ars Technica.
Testing gravel beyond Chicago
The reviewer brought the new Specialized Diverge 4 Pro to Denver to test it on challenging terrain unavailable on suburban Chicago's groomed trails.
Built for racing and adventure
Specialized calls it the ultimate getaway vehicle, designed with input from off-road riders, scientists, and racers. It's strictly human-powered, no electric assist.
Premium price, premium performance
At $8,249, the Diverge 4 Pro is designed for rough trails and technical descents. The bike handled challenging Colorado terrain without fault.
Future Shock 3.3 suspension
The suspension system sits between the head tube and stem, isolating the rider from impacts without changing steering geometry or adding brake dive.
How hydraulic damping works
The system uses hydraulic damping to control spring movement, converting energy to heat instead of bouncing like a pogo stick. It provides 20 mm of travel.
Lab tested impact reduction
Specialized's testing showed up to 53 percent reduction in peak impact at the bars. The reviewer felt noticeably less arm and upper-body fatigue after long rides.
Adjustable on the fly
A dial at the top of the stem adjusts compression damping. The reviewer left it fully open on nearly every surface after experimenting with settings.
Improved geometry and weight
The FACT 9r carbon frame has longer reach for better weight centering and a 5 mm lower bottom bracket for stability. Total weight is 8.72 kg.
Room for bigger tires
The bike comes with 45 mm tires but has clearance for 50 mm. The review model came with 50 mm Terra TLR Trail tires on Roval Terra CL carbon wheels.
SRAM Force drivetrain
The SRAM Force XPLR E1 has a single 40t chainring, 13-speed 10-46 cassette, and programmable buttons. It offers the same features as pricier SRAM Red.
Gearing for steep climbs
The gear ratios proved adequate for everything except flat sprints. The massive 46t rear cog was appreciated on particularly steep road stretches.
Built-in storage and power
The downtube storage area is larger than the previous model, fitting tubes, CO2, and tools. A Quarq Power Meter inside the spindle measures total power output.
Solid on pavement, not lively
On pavement, the bike feels stolid with bumpy 50 mm tires that sound like a dynamo. It favors comfort and stability over the liveliness of a road bike.
Where the Diverge shines
On gravel, the bike gobbled up every surface from smooth limestone paths to washboard roads in the Rockies, providing confidence and stability on technical descents.
“Gravel is where the Diverge 4 Pro shines.”
Minor quibbles only
The power meter estimates from one leg instead of measuring total power. The 172.5 mm cranks are longer than the industry trend, and the side-opening bottle cage isn't ideal.
Perfect for serious gravel riders
The Diverge 4 Pro is ideal for rough gravel, long rides, or bikepacking. If you're more Unbound Gravel than groomed trails, you can't go wrong with this bike.
“if you're more Unbound Gravel than groomed gravel, you can't go wrong with the Diverge 4 Pro.”
The main idea
The Diverge 4 Pro's Future Shock 3.3 suspension system dramatically reduces arm fatigue on rough terrain without the compromises of traditional suspension forks.
