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POLYGON QUALITY
So, you're new to mountain biking and want a high-value bike with progressive modern geometry perfect for local XC trails, racing or multi-day adventures? The C3 is your ticket to ride with a capable and lightweight carbon frame that will take you anywhere you want to go.

GEOMETRY
The C3s' sporty angles, tapered headtube, and stable chainstays make for better acceleration and steady handling. Ideal for fire trails, local single track and even the odd multi-day adventure. It features a 67° head tube and 73° seat tube angles, and 425-435mm chain stays for fast and snappy handling.

ACX CARBON
ACX carbon fibre is light, stiff, and strong. Polygon uses a blend of Toray T700 and High Modulus M series carbon, resulting in the maximisation of strength and stiffness.

RECON RL
Recon Silver RL has to be one of the most underrated performers in the RockShox range. It packs a massive punch with its air spring design, 120mm travel, adjustable rebound and compression dials for fine-tuning.

DEORE 12-SPEED
The Shimano Deore drivetrain is paired with an 11-51T cassette, giving you a +500% gear ratio to get up and down the mountain easily.
Components
FRAMESET
SUSPENSION
DRIVETRAIN
BRAKES
WHEELS
CONTACT POINTS
Geometry
S | M | M | L | XL | |
Wheel Size | 27.5" | 27.5" | 29" | 29" | 29" |
Rider Height | 5'2"-5'7" | 5'5"-5'9" | 5'6"-5'10" | 5'10"-6'1" | 6'1"-6'5" |
(A) Stack | 596 | 615 | 633 | 651 | 670 |
(B) Reach | 410 | 430 | 430 | 450 | 470 |
(C) Head Tube Angle | 67° | 67° | 67° | 67° | 67° |
(D) Head Tube Length | 100 | 120 | 100 | 120 | 140 |
(E) Seat Tube Angle | 73° | 73° | 73° | 73° | 73° |
Seat Tube Angle Effective | 75° | 75° | 75° | 75° | 75° |
(F) Seat Tube Length | 380 | 420 | 420 | 460 | 500 |
(G) Top Tube Effective | 569 | 594 | 597 | 621 | 649 |
(H) Bottom Bracket Height | 308 | 308 | 307 | 307 | 307 |
(I) Bottom Bracket Offset | 45 | 45 | 65 | 65 | 65 |
(J) Chainstay | 425 | 425 | 435 | 435 | 435 |
(K) Wheel Base | 1106 | 1134 | 1149 | 1176 | 1204 |
(L) Standover Height | 690 | 729 | 730 | 763 | 779 |
Handle Bar Width | 740 | 740 | 740 | 740 | 740 |
Fork Travel | 120 | 120 | 120 | 120 | 120 |
Crank Length | 170 | 170 | 170 | 175 | 175 |
* All lengths in mm
Assembly
As a guide, it'll take 10-40min depending on whether you're an experienced bike assembler or have little to no mechanical experience.
Side Note: Your cables will stretch during the initial bed-in period and must be adjusted by an experienced mechanic around 150km of riding.
Unboxing Your Bike
Bike Fit Setup
Tyre Pressure Setup
Suspension Setup
Unboxing Your Bike
Bike Fit Setup
Tyre Pressure Setup
Suspension Setup

Polygon Syncline C3 - Carbon Mountain Bike
Short Description
Shipping



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C3 weight
Love it !!! but the weight is ridiculous for a carbon bike and not listing the weight is not right either ! Also rear hub has too much slop and it was listed with a RL recon fork it isn’t RL ?? it’s just lock out RL is remote lockout meaning a button on the bars ?

Polygon C3
The bike process with bikesonline was easy. The bike came in a box with all the necessary tools to put the handle bar, seat and wheels on. I had to make a slight adjustment for the front brake pads not to rub which was super easy. I removed 6 total inches from the wide handle bar, replaced the pedals with rockbros with metal screws for a more stable foot to pedal when things are wet. I replaced the stock hand grips with something better. I feel no need to go tubeless with the stock tires and will keep it that way. The bike is a lot of fun and I no longer want to ride my road bike.