Details
DOWNHILL REBORN
After years of development, Polygon returns to the DH scene with the all-new Collosus DH—a bike that blends racing pedigree with bike park versatility. Born from the Collosus N enduro platform and refined over two full UCI Enduro World Cup seasons with Polygon's Factory Racing team, the DH is built for the rigors of racing and aggressive riding. Designed for riders who demand speed, adjustability, and reliability at full send.
IFS LINKAGE DESIGN
Polygon’s 6-bar Independent Floating Suspension (IFS) delivers a highly tunable ride, separating wheel path and anti-squat from the leverage curve for precision performance. The result? Better control under braking, optimal cornering traction, and responsive support over repeated hits—whether sending gaps or charging through relentless rock gardens.
TUNE IT YOUR WAY
Versatility is at the core of the Collosus DH. With four geometry configurations and the option to run either a mixed wheel (MX) or full 29er setup, the bike lets riders tailor their ride to the terrain and their style. Seamlessly transition from playful park laps to full-on DH race runs—whether you want quick handling or straight-line speed, the Collosus DH adapts.
Specs
| frameset | |
|---|---|
| Frame | ALX Alloy Frame, 200mm travel, Mullet (29" F / 27.5" R), 157mm O.L.D., BSA 83mm threaded BB, Floating Suspension, Adjustable Geometry, Carbon Upper Linkage |
| Headset | FSA No.55R/57‑1 – ZS56/28.6 | ZS56/30, Semi‑Integrated, 1‑1/8" Threadless |
| suspension | |
| Fork | RockShox Boxxer Base, Air Spring, 200mm Travel, Charger 3, Compression, Rebound, 20x110mm Thru Axle |
| Shock | RockShox Vivid Base, 250x75mm, M8x30mm For Both Sides |
| drivetrain | |
| Rear derailleur | SRAM GX DH 7-Speed |
| Shifter | SRAM GX DH 7-Speed |
| Crank | SRAM Descendant DH, Arm Length: 165mm (S, M, L, XL) |
| Chainring | 34T (Max 36T) |
| Cassette | SRAM PG720 7-Speed, 11-25T |
| Chain | KMC X11 |
| brakes | |
| Front brake | TRP DH-R EVO Hydraulic Disc Brake, 4-Piston Calipers |
| Rear brake | TRP DH-R EVO Hydraulic Disc Brake, 4-Piston Calipers |
| Rotor | TRP RS01E, 203mm, 6-bolt |
| wheels | |
| Front hub | Novatec 32H TA 20X110 6B |
| Rear hub | Novatec 32H TA 12X157 6B For Cassette Sprocket |
| Rim | Polygon MT6 Alloy Rim 27.5 Rear, 29 Front, 29mm internal width, 32H, Tubeless Compatible ** |
| Tyre | Schwalbe Tacky Chan Super Gravity, Addix Soft, Front: 29x2.4", Rear: 27.5x2.4", Tubeless Compatible ** |
| contact points | |
| Handlebar | Raceface Atlas 35, 820mm Width, Rise: 35mm, 8° Back-Sweep, Bar Bore: 35mm |
| Grips | Lock-on Grips |
| Saddle | Xtent, Steel ø 7mm |
| Seatpost | Polygon Expert 34.9mm, 320mm, Seatpost Clamp: 38.9mm |
| Stem | Raceface Atlas 35, 50mm Length, Bar Bore: 35mm |
| Pedals | Flat Alloy |
| weight | |
| Bike weight | 39.12 lbs |
Geo
MX
| LOW | HIGH | |||||||
| Frame Size | S | M | L | XL | S | M | L | XL |
| Height (cm) | 5'0"-5'5" | 5'4"-5'9" | 5'8"-6'1" | 6'0"-6'5" | 5'0"-5'5" | 5'4"-5'9" | 5'8"-6'1" | 6'0"-6'5" |
| (A) Frame Stack | 635 | 635 | 635 | 635 | 632 | 632 | 632 | 632 |
| (B) Frame Reach | 433 | 456 | 476 | 498 | 437 | 460 | 480 | 502 |
| (C) Head Tube Angle | 62.6° | 62.6° | 62.6° | 62.6° | 63° | 63° | 63° | 63° |
| (D) Head Tube Length | 105 | 105 | 105 | 105 | 105 | 105 | 105 | 105 |
| (E) Seat Tube Angle | 71.6° | 71.6° | 71.6° | 71.6° | 72° | 72° | 72° | 72° |
| Effective Seat Tube Angle | 78.1° | 78.1° | 78.1° | 78.1° | 78.5° | 78.5° | 78.5° | 78.5° |
| (F) Seat Tube Length | 390 | 390 | 390 | 390 | 390 | 390 | 390 | 390 |
| (G) Effective Top Tube | 558 | 581 | 601 | 623 | 557 | 580 | 600 | 622 |
| (H) BB Height | 350 | 350 | 350 | 350 | 356 | 356 | 356 | 356 |
| (I) BB Drop | F:30 R:11 | F:30 R:11 | F:30 R:11 | F:30 R:11 | F:24 R:6 | F:24 R:6 | F:24 R:6 | F:24 R:6 |
| (J) Chainstay Length | 446 | 446 | 446 | 446 | 445 | 445 | 445 | 445 |
| (K) Wheelbase | 1251 | 1274 | 1294 | 1316 | 1250 | 1273 | 1293 | 1315 |
| (L) Standover Height | 813 | 813 | 813 | 813 | 817 | 817 | 817 | 817 |
| Front Travel | 203 | 203 | 203 | 203 | 203 | 203 | 203 | 203 |
| Rear Travel | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 |
| Maximum Chainring Size | 36T | 36T | 36T | 36T | 36T | 36T | 36T | 36T |
29"
| LOW | HIGH | |||||||
| Frame Size | S | M | L | XL | S | M | L | XL |
| Height (cm) | 5'0"-5'5" | 5'4"-5'9" | 5'8"-6'1" | 6'0"-6'5" | 5'0"-5'5" | 5'4"-5'9" | 5'8"-6'1" | 6'0"-6'5" |
| (A) Frame Stack | 634 | 634 | 634 | 634 | 631 | 631 | 631 | 635 |
| (B) Frame Reach | 435 | 458 | 478 | 500 | 439 | 462 | 482 | 504 |
| (C) Head Tube Angle | 62.8° | 62.8° | 62.8° | 62.8° | 63.2° | 63.2° | 63.2° | 63.2° |
| (D) Head Tube Length | 105 | 105 | 105 | 105 | 105 | 105 | 105 | 105 |
| (E) Seat Tube Angle | 71.8° | 71.8° | 71.8° | 71.8° | 72.2° | 72.2° | 72.2° | 72.2° |
| Effective Seat Tube Angle | 78.3° | 78.3° | 78.3° | 78.3° | 78.7° | 78.7° | 78.7° | 78.7° |
| (F) Seat Tube Length | 390 | 390 | 390 | 390 | 390 | 390 | 390 | 390 |
| (G) Effective Top Tube | 557 | 580 | 600 | 622 | 556 | 579 | 599 | 621 |
| (H) BB Height | 352 | 352 | 352 | 352 | 358 | 358 | 358 | 358 |
| (I) BB Drop | 27 | 27 | 27 | 27 | 22 | 22 | 22 | 22 |
| (J) Chainstay Length | 446 | 446 | 446 | 446 | 445 | 445 | 445 | 445 |
| (K) Wheelbase | 1253 | 1276 | 1296 | 1318 | 1252 | 1275 | 1295 | 1317 |
| (L) Standover Height | 815 | 815 | 815 | 815 | 819 | 819 | 819 | 819 |
| Front Travel | 203 | 203 | 203 | 203 | 203 | 203 | 203 | 203 |
| Rear Travel | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 |
| Maximum Chainring Size | 36T | 36T | 36T | 36T | 36T | 36T | 36T | 36T |
Note: 29er - Our bikes do not come set up as full 29’’. You can change to 29er which will result in the following numbers.
* All lengths in mm
Build
Assembly Videos - Dual Suspension MTB
Get ready to hit the road with your new bike! It’ll arrive almost ready to go, but you’ll need to do a quick setup first. Don’t worry, we’ve popped all the tools you’ll need right in the box.
If you’re a bike-building pro: You’ll be done in just 10-15 minutes.
Got a knack for fixing things? Give it 15-25 minutes.
New to the DIY world? Take your time, around 30-40 minutes, and you’ll get there!
Need some visual aids? We’ve got you covered! Just click on our step-by-step video guide below for a smooth setup. Happy cycling!
How To Unbox Your Dual Suspension MTB
How To Setup Your Suspension
Dial In Your Bike Fit
Dial In Your Tyre Pressures
Pre-Ride Check