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Polygon2026

2026 Polygon Siskiu T T7

Trail

The 2026 Polygon Siskiu T T7 sits at the aggressive end of the range for a trail bike, with a slacker head angle and a shorter rear center. Reach 440 to 505 mm, stack 604 to 636 mm. The Siskiu T T7 build comes with Shimano Deore M6100 shifting and Polygon MT6 wheels.

Source: polygonbikes.com. Checked .

Key facts

Brand
Polygon
Model year
2026
Frame
T7
Type
Trail
Geometry labels
S, M, L, and XL
Geometry
Complete for every size
Source
polygonbikes.com
Checked

Geometry by size

2026 Polygon Siskiu T T7 geometry drawing, size MSide view of the 2026 Polygon Siskiu T T7 frame in size M, drawn to scale from its published geometry, with lettered dimension lines.J 1214A 465mmB 609mmJ 1214mmH 430mmC 595mmD 64.5°E 71.2°F 95mmG 400mmN 338mmL 705mm
Geometry drawing, size M, to scale.
2026 Polygon Siskiu T T7 geometry by size
MeasurementSMLXL
Reach(mm)440465485505
Stack(mm)604609622636
Head tube angle(°)64.564.564.564.5
Seat tube angle(°)71.271.271.271.2
Effective top tube(mm)568595619644
Chainstay length(mm)430430430430
Wheelbase(mm)1186121412401267
BB height(mm)337.5337.5337.5337.5
Standover(mm)704705713722
Seat tube length(mm)390400415430
Head tube length(mm)9095110125

Stock build

19 parts

Frame

Polygon ALX
FrameFrom the manufacturer: Category TrailFrom the manufacturer: Rear travel 140mm

Suspension

RockShox Recon Silver TK
ForkFrom the manufacturer: Wheel size 27.5From the manufacturer: Front axle / spacing 9 QR / 15 x 100 / 15 x 110From the manufacturer: Steerer diameter 1 1/8 Alum / 1 1/8 Steel / 1.5 Tapered AlumFrom the manufacturer: Brake mount 160 mm min / 220 mm maxFrom the manufacturer: Stanchion diameter 32mmFrom the manufacturer: Spring type Solo Air / CoilFrom the manufacturer: External adjustments Silver-RL
RockShox Deluxe Ultimate
Rear shockFrom the manufacturer: Spring type AirFrom the manufacturer: External adjustments Remote TwistLocFrom the manufacturer: Tune R55/C22

Drivetrain

ShifterFrom the manufacturer: Speeds 12From the manufacturer: Actuation type Mechanical
DerailleurFrom the manufacturer: Speeds 12From the manufacturer: Maximum cog 51 tFrom the manufacturer: Mount type Standard hangerFrom the manufacturer: Cassette compatibility ShimanoFrom the manufacturer: Clutch Yes
CassetteSpeeds 12Weight 595 g
ChainSpeeds 12
CranksetFrom the manufacturer: Chainring interface BSACrank length 165 / 170 / 175mm
ChainringFrom the manufacturer: Teeth 32 tFrom the manufacturer: Mount standard Direct MountFrom the manufacturer: Speeds 12
Flat Pedal
PedalsFrom the manufacturer: Pedal type FlatFrom the manufacturer: Body material fiber-reinforced nylon

Wheels & Tires

WheelsetFrom the manufacturer: Internal rim width 30mmFrom the manufacturer: Rim material AluminumFrom the manufacturer: Spoke count 32From the manufacturer: Tubeless ready yes
TireFrom the manufacturer: TPI 60 TPIFrom the manufacturer: Bead FoldingFrom the manufacturer: Tubeless ready Yes

Brakes

Shimano SM-RT54
Rotor

Cockpit

HandlebarFrom the manufacturer: Clamp diameter 35mmFrom the manufacturer: Width 780mmFrom the manufacturer: Backsweep 9°
StemFrom the manufacturer: Bar clamp diameter 35mmFrom the manufacturer: Steerer diameter 1.5"From the manufacturer: Rise 0°
FSA No 57E
HeadsetFrom the manufacturer: Standard (SHIS) ZSFrom the manufacturer: Steerer compatibility 44/28.6From the manufacturer: Bearing type Sealed Cartridge

Seatpost & Saddle

Linc XTENT
Saddle

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Quick answers

Which size or configuration labels have geometry for the 2026 Polygon Siskiu T T7?
Geometry is listed for S, M, L, and XL.
What are the reach and stack of the 2026 Polygon Siskiu T T7 in size L?
In size L, reach is 485 mm and stack is 622 mm.
What is the head tube angle of the 2026 Polygon Siskiu T T7?
The head tube angle is 64.5 degrees in every size.
What does the 2026 Polygon Siskiu T T7 ship with?
The stock build includes Polygon ALX, RockShox Recon Silver TK, Shimano Deore M6100, and Polygon MT6.
Which years of the Polygon Siskiu T are on Quiver?
Quiver has the Polygon Siskiu T for 2026 and 2027.

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