When the trail gets steep, fast, and unforgiving, only a true downhill mountain bike will do. That’s where Polygon’s Collosus DH7 and DH9 step in—two high-performance machines built to race, drop, and shred with confidence.
As part of Polygon’s elite downhill lineup, both bikes are engineered to handle aggressive terrain at speed.
But how do they differ, and which one fits your ride style best? Let’s break it down.
What Are the Polygon Collosus DH7 & DH9?
The Polygon Collosus DH7 and Polygon Collosus DH9 are both full-suspension downhill mountain bikes built for one thing: maximum speed and control on extreme terrain. Designed in collaboration with the UR Team, these bikes reflect years of race-proven development.
The Collosus DH7 offers a solid performance package for riders seeking downhill capability on a budget, while the Collosus DH9 is a World Cup-level mountain bike, packed with high-end components and an advanced suspension system.
Both share Polygon’s downhill DNA, but their build and purpose cater to slightly different rider needs.
Collosus DH7 vs. DH9: Detailed Spec Comparison
| Component | Polygon Collosus DH7 | Polygon Collosus DH9 |
| Frame | ALX alloy, 200 mm IFS suspension, mullet setup with flip‑chip for 29″/27.5″ or full 29er geometry | ALX alloy + carbon upper link, 200 mm IFS suspension, mullet with flip‑chip; refined World Cup geometry |
| Fork / Travel | RockShox BoXXer Base (air), 200 mm front travel | Fox 40 Factory Kashima (air), 203 mm front travel |
| Rear Shock | RockShox Vivid Base coil, 250 x 75mm | Fox Float X2 Factory air/coil, 250 x 75 mm travel, with high/low-speed tuning |
| Geometry & Adjustments | Adjustable flip‑chip + 1.5″ headset for slack/steep options; head angle ≈63°, BB ≈350–356 mm | Same adjustability tools; geometry fine-tuned by the UR Team, optimized leverage, and WC stance |
| Brakes | TRP DH‑R EVO 4‑piston hydraulic discs with 203 mm rotors | TRP DH‑R EVO 4‑piston hydraulic discs (same as DH7) |
| Drivetrain | SRAM GX DH 1×7-speed with Descendant crank and PG720 cassette | SRAM X01 DH 1×7-speed (upgraded derailleur/shifter), Descendant crank, PG720 cassette |
| Wheels & Tires | Mullet alloy rims (29″/27.5″), Schwalbe Tacky Chan Addix Soft | Mullet DT-Swiss FR-541 alloy rims, Schwalbe Tacky Chan Addix Soft |
Key Takeaways: Why These Specs Matter
- Frame & Geometry: Same ALX alloy and 6-bar IFS base, but the DH9 adds a carbon link and World Cup-tuned geometry for sharper control at speed.
- Suspension: DH7’s RockShox setup is solid; DH9’s Fox Factory suspension offers smoother, more adjustable performance.
- Drivetrain: GX DH on the DH7 is reliable; X01 DH on the DH9 is crisper and built for racing stress.
- Wheels: Both mullet setups, but the DH9 gets DT-Swiss FR 541 rims, stronger and lighter for aggressive lines.
- Brakes: Same TRP DH-R EVO brakes on both, powerful and consistent.
- Price: DH7 = performance value, DH9 = premium upgrades for competitive riders.
Who Should Ride the Collosus DH7 vs DH9?
Choosing between the Polygon Collosus DH7 and Collosus DH9 comes down to more than specs; it’s about your riding style, terrain preferences, experience level, and, of course, budget. While both bikes are built for serious downhill use, they’re tuned for different types of riders.
Ride the Collosus DH7 if:
- You’re new to downhill racing or coming from enduro/trail riding and want to try bike parks or DH lines without overspending.
- You’re looking for a budget-friendly option that doesn’t compromise on core downhill performance.
- You want a bike that’s durable, forgiving, and easy to maintain, with reliable RockShox suspension and SRAM GX DH drivetrain.
- You’ll mostly ride local trails, shuttle laps, or weekend park days, and not necessarily World Cup-level courses.
- You value adjustable geometry and a capable setup to grow into as your skills improve.
The DH7 is ideal for riders who want a race-ready feel without the race-day price tag. It’s tough, adaptable, and confidence-inspiring on steep terrain.
Ride the Collosus DH9 if:
- You’re an experienced DH rider or elite racer looking to compete or push performance boundaries on the steepest, roughest tracks.
- You demand high-end suspension performance, and Fox 40 Factory and Float X2 give unmatched control, especially on fast, technical descents.
- You value the extra adjustability and smoother ride that comes from Kashima coating, precision-tuned shocks, and World Cup geometry.
- You regularly ride technical terrain, UCI-level courses, or want to replicate the setup of Polygon’s own UR Team.
- You’re willing to invest more for top-tier components, lighter wheels, and drivetrain upgrades that will give you an edge in competition.
The DH9 is built for serious riders who know what they need and want the best possible downhill machine to match their skills.
Why Both Are Great?
Whether you choose the Collosus DH7 or DH9, you’re getting a purpose-built downhill mountain bike designed to tackle aggressive terrain, big hits, and steep descents.
Polygon’s downhill lineup is built on the same proven IFS suspension platform and modern geometry, meaning you’ll feel confident and composed no matter which model you ride.
That said, the DH9 edges ahead when it comes to serious performance. With Fox Factory suspension, a refined World Cup chassis, and DT-Swiss race-grade wheels, the DH9 delivers more precision, control, and tuning potential.
These upgrades translate into a smoother ride over rough terrain, better cornering grip, and more confidence when pushing at the limit.
For riders aiming to race competitively, dial in every millimeter of suspension travel, and attack the steepest lines with full commitment, the Collosus DH9 simply performs at a higher level. The DH7 is a beast, but the DH9 is a weapon.
Quick Tips: How to Choose the Right Downhill Bike
- Suspension First: Look for at least 200mm of travel and a reliable linkage. The right system keeps you stable under braking and responsive over roots and rocks.
- Fit Over Material: Carbon is lighter and stiffer, but alloy is more durable and budget-friendly. Whichever you choose, frame fit is key to handling at high speed.
- Tuneability Matters: Pros value adjustable shocks, especially rebound and compression control. If you’re progressing fast, choose a bike that lets you fine-tune your setup.
- Brakes & Wheels Are Critical: Go for 4-piston brakes and tough wheels. Control and durability are essential when you’re hitting 40+ km/h on steep descents.
- Mullet or 29”: Modern DH bikes often use a 29” front and 27.5” rear combo for rollover and agility. Bonus if your bike lets you switch via flip-chip.
Conclusion
Whether you choose the Polygon Collosus DH7 or the Collosus DH9, you’re investing in a serious downhill mountain bike that’s built to handle high-speed terrain, massive drops, and technical descents.
The DH7 gives you dependable performance at a more accessible price point, perfect for newer riders or those looking to explore the gravity scene without overspending.
On the other hand, the DH9 offers a premium ride with elite-level components, suspension tuning, and geometry made for racing.
Both models carry Polygon’s proven DNA, and both deliver the speed, stability, and fun that define what a true downhill bike should be. The choice comes down to your goals, terrain, and how far you want to push yourself.
Ready to ride like the pros? Explore the Polygon Collosus DH7 and DH9 now on Rodalink Malaysia, and gear up for the next descent that defines your ride.
