Big thanks to modern geometry; a slacker head angle and longer reach and steeper seat, makes the Polygon Siskiu D series series unbelievably capable for riders looking to tackle XC riding with some aggression. The anti-squat has been optimized for pedaling performance and the suspension is more progressive for when the trail gets rowdy. We improved support under power, enabling Siksiu D platform climbs like a hardtail without substituting comfort or traction. The downs are even better when you enjoy the climb up.
| Model | DSE | D7 | D5 |
| Frame | ALX XC Trail Alloy Thru Axle | ALX XC Trail Alloy QR | |
| Front Suspension | Suntour Raidon32 Boost LO-R, Air 120mm | Rockshox Recon Silver RL, Air 120mm | Suntour XCM HLO 120mm |
| Rear Suspension | Rockshox Deluxe Select Plus E2E: 190x45mm | Suntour Raidon Lo Air E2E: 190x51mm | |
| Rear Derailleur | Shimano Deore M5100-SGS 11-Speed | Shimano M3100 9-Speed | |
| Front Derailleur | - | Shimano 2-Speed | |
| Shifter | Shimano Deore M5100 1x11-Speed | Shimano M3100 2x9-Speed | |
| Crankset | Shimano Deore M5100-1 32T, 2pc Crank 170mm - S, M 175mm - L, XL | Shimano MT210 36/22T 170mm | |
| Cassette | Shimano Deore M5100 11-51T 11-Speed | Shimano HG200 11-36T 9-Speed | |
| Brake | Shimano MT201 Hydraulic | Shimano MT200 Hydraulic | |
| Wheelset | Alloy Double Wall Tubeless Ready | Alloy Double Wall | |
| Tire | Schwalbe 27.5/29 x 2.25" | Performance 27.5 x 2.25" | |
| Handlebar | Entity Xpert Alloy 780x31.8mm Rise: 30mm Bend: 6degree | Entity Sport Alloy 760 x 31.8mm Rise: 12mm Bend: 0degree | |
| Stem | Entity | ||
| Seatpost | Tranzx Dropper 27.5": 150mm, 30.9x459mm 29"" 170mm, 30.9x499mm | Entity Sport Alloy 30.9x350mm | |
| Saddle | Entity Void | ||
| Weight | |||
| Color | |||
*THE SPECIFICATIONS, COLORS, AND AVAILABILITY OF THE PRODUCTS CAN BE SUBJECTS TO ALTER WITHOUT PRIOR NOTIFICATION
*Siskiu D5's geometry & sizing is slightly different from D7, DSE

| Size | S 27.5" | M 27.5" | L 27.5" | |
| Rider's Height (cm) | 152-165 | 162-175 | 162-175 | |
| A | Seat Tube Length | 395 | 435 | 485 |
| B | Seat Tube Angle | 70 | 70 | 70 |
| C | Effective seat Tube Angle | 75.5 | 75.5 | 75.5 |
| D | Head Tube Length | 102 | 105 | 122 |
| E | Head Tube Angle | 67 | 67 | 67 |
| F | Effective Top Tube | 572.7 | 595.1 | 617.5 |
| G | BB Height | 326 | 326 | 326 |
| H | BB Offset | 27 | 27 | .27 |
| I | Chainstay Length | 432 | 432 | 432 |
| J | Wheelbase | 1130 | 1157 | 1181 |
| K | Frame Reach | 425 | 445 | 465 |
| L | Frame Stack | 571.2 | 580.4 | 589.6 |
| M | Standover Height | 676 | 696 | 729 |