In the raw, high-stakes world of downhill, every second counts, and every line choice can make or break your ride. That’s exactly why Polygon has unleashed the new Collosus DH9, a downhill beast engineered to rewrite what’s possible on gravity-fueled terrain.
Built for riders who demand more than just speed, the Collosus DH9 Downhill mountain bike arrives with precision-tuned performance, groundbreaking adjustability, and a chassis ready to crush the gnarliest descents.
With downhill racing seeing tighter competition and more technical courses this year, having a bike that lets you ride harder, smarter, and faster has never been more crucial. The Collosus DH9 steps up to that challenge, and then some.
Highlighting the Collosus DH9’s Game‑Changing Features
Below are the standout innovations that put the Collosus DH9 miles ahead in downhill terrain, engineered for racers and riders who thrive on precision and speed:
1. Dial‑In Geometry via Dual Flip‑Chips
The Collosus DH9 uses two flip-chip systems: one on the rear shock mount and one on the chainstay. This combination gives you four unique setup possibilities, letting you adjust the bike to your style and trail conditions.
Why is this great for you?
- You can switch between a “mullet” wheel setup (29” front / 27.5” rear) for quick handling, or a full 29” wheel for maximum rollover speed.
- The flip-chip positions change the geometry to match those wheel options, so the bike’s handling stays predictable even after swapping wheels.
- It also accepts angle-adjust headsets (up to ±1.5°), letting you tweak the steering feel even more.
2. Rider‑Oriented Geometry Upgrades
Polygon reworked the DH9’s geometry to give riders more confidence and better control on today’s technical courses. Key geometry highlights include:
- A slacker head tube angle, around 62.6°, makes the bike more stable at high speed and in steep chutes.
- Longer reach numbers (increased front-center) for extra room to move around and stay balanced on rough sections.
- Optimized chainstay length so you still get snappy cornering without losing stability.
3. 6‑Bar Independent Floating Suspension (IFS)
The suspension system on the Collosus DH9 is the real star. Instead of a simpler linkage, Polygon uses a 6-bar Independent Floating Suspension layout.
Here’s what makes it special:
- The 6-bar separates the path the rear wheel takes from how much force you put on the pedals or brakes.
- That means braking doesn’t stiffen up the rear suspension, so you keep traction even on sketchy braking bumps.
- The leverage curve stays consistent, giving you smooth travel through the full stroke, no sudden harsh ramp-up at the end.
4. Seamless Modern Shifting with UDH
Polygon future-proofed the DH9 with UDH (Universal Derailleur Hanger) compatibility, which works perfectly with modern SRAM T-Type Transmission drivetrains.
- Shifting is super crisp and consistent, even under heavy loads
- Easier to replace hangers if something goes wrong in a crash
- Compatible with the latest drivetrain systems so you can upgrade without hassle
For downhill riders, that means less worrying about mechanical issues and more confidence to focus on the fastest line possible.
Polygon Collosus DH9 Specifications
| Component | Specification |
| Frame | ALX DH 6066 Series, 200 mm travel, 6-bar Independent Floating Suspension, UDH compatible |
| Fork | FOX 40 Factory, Kashima coating, 29”, 203 mm travel, Grip2 damper |
| Rear Shock | FOX DHX2 Factory, 250 × 75 mm, coil spring |
| Drivetrain | SRAM X0 DH 7-speed, with SRAM GX DH 7-speed shifter |
| Crankset | SRAM Descendant DH, 165 mm, 34T chainring |
| Cassette | SRAM PG-720, 11–25T |
| Chain | KMC X11 |
| Brakes | TRP DH-R EVO levers, TRP DH-R EVO hydraulic disc calipers, TRP RS01E 203 mm 6-bolt rotors. |
| Wheelset | DT-Swiss 29” front, 27.5” rear (mullet) / DT-Swiss 29” both (full 29er setup possible) |
| Tires | Schwalbe Tacky Chan 29” × 2.4” front, 27.5” × 2.4” rear (mullet) |
Trail Test: Collosus DH9 Performance on Steep Terrain
Out on the steepest downhill trails, the Collosus DH9 Downhill mountain bike proved its pedigree. The 6-bar independent floating suspension kept the rear wheel tracking smoothly even through brutal rock gardens and heavy braking bumps, giving a planted, predictable feel.
Test riders noted the updated geometry delivered instant confidence at speed, while the dual flip-chip system made wheel swaps between mullet and full 29” effortless, with consistent handling across setups.
Braking stayed calm and balanced, and thanks to UDH compatibility, shifting was solid even under big compressions.
Who Should Consider the Collosus DH9, and Is It Worth the Investment?
With its highly advanced 6-bar suspension, dual flip-chip system, upgraded geometry, and UDH-ready drivetrain, the Collosus DH9 Downhill mountain bike is squarely aimed at riders who push their limits on serious terrain.
If you are a racer, bike park shredder, or a committed weekend gravity warrior who wants a bike that won’t hold you back, the DH9 is worth a look.
While final pricing can vary by dealer and region, Polygon positions the Collosus DH9 competitively against other flagship downhill bikes with similar specs. Think of it as a World Cup-capable machine without the overblown boutique price tag.
Compared to carbon-framed DH race rigs, the DH9’s aluminum construction with a proven 6-bar platform provides a smart value for riders who want bulletproof durability, easy maintenance, and performance ready for the toughest race weekends.
Polygon’s decades of downhill experience, plus this year’s fresh geometry refinements, mean the Collosus DH9 is purpose-built to keep up with modern downhill demands: steeper trails, bigger jumps, higher speeds.
If you’re upgrading from an older DH platform or moving up from a freeride bike that struggles on true race courses, this bike is a legitimate upgrade path, delivering adjustability, tunability, and performance in a package that’s designed to evolve with your skills.
Conclusion
The Polygon Collosus DH9 Downhill mountain bike is more than a facelift; it’s a leap forward for riders who demand control, adjustability, and downhill confidence in one unstoppable machine.
From its dual flip-chip geometry to the advanced 6-bar suspension, every detail is engineered to give you maximum speed with maximum composure, no matter how savage the trail gets.
If you’re hungry for a modern downhill bike that adapts to your style and terrain, the Collosus DH9 makes an exceptionally strong case. Whether you’re chasing podium finishes or personal bests at the bike park, this bike is ready to carry you to the next level.
Read also
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