Details
LIGHTER. STIFFER. FASTER.
The new Helios A delivers a high-performance experience from the first turn of the cranks, with an exceptional blend of stiffness, lightness, and aerodynamics. The re-engineered 880g (size M) frameset is 150g lighter than the previous generation, yet offers greater torsional stiffness thanks to a reinforced front triangle and refined ACX carbon layup.
ENGINEERED FOR SPEED
The Helios A series was obsessively developed over three years alongside elite athletes, with a focus on aerodynamic performance and race-day reliability. The new frame is paired with a new front-end fork profile and optimized tubing shapes to cut drag and improve control - the result is a frameset that climbs fast, corners sharp, and descends with confidence. It’s supported by the Terengganu Polygon pro team—fast, efficient, and dialed.
BUILT FOR COMFORT
Comfort and performance go hand in hand on the Helios A. With clearance for up to 34mm tyres, a simple swap boosts compliance and unlocks true all-rounder versatility. The updated cockpit with a flared handlebar and ergonomic flat tops further enhances comfort while improving control and stability, all without compromising speed.
Specs
| frameset | |
|---|---|
| Frame | ACX Performance Carbon, UCI Approved, Full Internal Routing, UDH (Universal Derailleur Hanger) |
| Headset | Integrated (IS), Sealed Bearings, S.H.I.S: IS 52/28.6 |
| suspension | |
| Fork | ACX Performance Carbon, UCI Approved, Tapered Steerer 1-1/8" to 1-1/2" |
| drivetrain | |
| Rear derailleur | Shimano Ultegra Di2 RD-R8150, Direct Mount, 12-Speed |
| Front derailleur | Shimano Ultegra Di2 FD-R8150, Braze-On, Down-Pull |
| Shifter | Shimano Ultegra Di2 ST-R8170, Dual Control Levers, 2x12-Speed |
| Crank | Shimano Ultegra FC-R8100, with optional Powermeter, TOKEN T47 BB, 24mm Spindle, Lengths by Size: 165mm (XXXS–XS), 170mm (S–M), 172.5mm (L), 175mm (XL) |
| Chainring | 52/36T, Hollowtech II, Max Supported: 53/39T |
| Cassette | Shimano Ultegra CS-R8101-12, 11-34T, 12-Speed |
| Chain | KMC X12 EPT, Anti-Rust Coating, 12-Speed |
| brakes | |
| Front brake | Shimano Ultegra BR-R8170 Hydraulic Disc, Flat Mount |
| Rear brake | Shimano Ultegra BR-R8170 Hydraulic Disc, Flat Mount |
| Rotor | Shimano Ultegra CL800, Center Lock, 160mm (Front) / 140mm (Rear) |
| wheels | |
| Front hub | LINC Alloy, 12x100mm Thru Axle, Oversize Flange, 20H, Sealed Cartridge Bearings, Center Lock Disc Mount, Sapim Race Stainless Spokes, Double Butted, Straight Pull |
| Rear hub | LINC Alloy, 12x142mm Thru Axle, Oversize Flange, 24H, Sealed Cartridge Bearings, Center Lock Disc Mount. Freehub: Shimano HG 11/12-Speed Compatible, Sapim Race Stainless Steel Spokes, Double Butted, Straight Pull |
| Rim | LINC Beta 45 Carbon Disc, 700C, 45mm Depth, 22mm Internal Width, 30mm External Width, F: 20H / R: 24H, Total Weight: 1500g (700g Front / 800g Rear), Tubeless Ready ( Tubeless Tape Installed ) ** |
| Tyre | Pirelli PZero Road TLR, 700x28C, 2-Way Fit (Clincher & Tubeless) |
| Max tyre size | 700x34C |
| Inner tube | Tubeless Tape Installed |
| contact points | |
| Handlebar | Polygon Carbon Road Handlebar: Width – 400mm (XXXS–XS), 420mm (S–M), 440mm (L–XL); Drop – 125mm, Reach – 80mm |
| Grips | Performance Road Bar Tape (Black) |
| Saddle | LINC Flux2, Cr-Mo Rails Ø7mm |
| Seatpost | Carbon, Aero Shape, Adjustable Offset |
| Stem | Polygon Carbon Stem: Length – 90mm (XXXS), 100mm (XXS–XS), 110mm (S–M), 120mm (L–XL); Angle – -7.5° |
| weight | |
| Bike weight | 17.59 lbs (Size S) |
Geo
| XXXS | XXS | XS | S | M | L | XL | |
| Rider's Height | 4’8”–5’0” | 4’11”–5’3” | 5’2”–5’6” | 5’5”–5’9” | 5’7”–5’11” | 5’10”–6’2” | 6’1”–6’5” |
| Top Tube Effective | 502 | 513 | 529 | 540 | 556 | 570 | 598 |
| Reach | 370 | 375 | 385 | 390 | 400 | 405 | 420 |
| Seat Tube Length | 395 | 420 | 457 | 489 | 499 | 518 | 536 |
| Seat Tube Angle | 75 | 74.7 | 74.3 | 74 | 73.7 | 73.3 | 73 |
| Effective Seat Tube Angle | 75° | 75° | 74° | 74° | 74° | 73° | 73° |
| Head Tube Angle | 71 | 71.3 | 71.5 | 72.3 | 72.5 | 72.8 | 73 |
| Head Tube Length | 90 | 100 | 110 | 120 | 130 | 150 | 170 |
| BB Offset | 78 | 78 | 75.5 | 73 | 73 | 71.5 | 71.5 |
| Bottom Bracket Height | 78 | 78 | 76 | 73 | 73 | 72 | 72 |
| Chainstay Length | 410 | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase | 969 | 976 | 988 | 985 | 996 | 1005 | 1024 |
| Frame Stack | 493 | 503 | 511 | 523 | 533 | 551 | 571 |
| Standover | 662 | 685 | 720 | 752 | 761 | 780 | 799 |
| Crank Length | 165mm | 165mm | 165mm | 170mm | 170mm | 172.5mm | 175mm |
| Stem Length | 90mm | 100mm | 100mm | 110mm | 110mm | 120mm | 120mm |
| Handlebar Width | 400mm | 400mm | 400mm | 420mm | 420mm | 440mm | 440mm |
The seat post on the Polygon Helios may need a quick trim for the perfect fit—this is a normal step with high-performance bikes and won’t affect the bike in any way. Our tech team is here to help if you’d like guidance.