SKU: 64123660199
argon gravel bike

argon gravel bike Argon 18 Dark Matter GRX Gravel Bike

Sale price$22.60 Regular price$25.11
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 20 - Sep 25

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Description

argon gravel bike Argon 18 Dark Matter GRX Gravel BikePLEASE CONTACT US TO CHECK THE LATEST AVAILABILITY AND LEADTIMES BEFORE PLACING AN ORDER. From rough race days to the unknown, the Dark Matter is your ultimate gravel machine. With massive tire clearance, smart storage, and rugged geometry, it powers through any terrain. Whatever the ride throws at youget over it. Built for riders who refuse to choose between speed, comfort, and versatility, the Argon 18 Dark Matter is a premium gravel bike designed

PLEASE CONTACT US TO CHECK THE LATEST AVAILABILITY AND LEADTIMES BEFORE PLACING AN ORDER. 

From rough race days to the unknown, the Dark Matter is your ultimate gravel machine. With massive tire clearance, smart storage, and rugged geometry, it powers through any terrain. 

Whatever the ride throws at you—get over it.

Built for riders who refuse to choose between speed, comfort, and versatility, the Argon 18 Dark Matter is a premium gravel bike designed to thrive wherever the road—or lack of it—takes you. From fast-paced gravel races to long backcountry adventures, the Dark Matter blends race-inspired performance with all-day endurance capability.

At the heart of the Dark Matter is Argon 18’s advanced carbon frame, engineered for efficient power transfer and confident handling on unpredictable terrain. With clearance for wide gravel tires, a stable yet responsive geometry, and vibration-damping compliance, this bike delivers control and comfort over rough roads, chunky gravel, and mixed surfaces. Multiple mounting points make it equally ready for bike packing missions or stripped-down race days.

At HYPT Bike Performance, we love the Dark Matter for its ability to adapt to your riding style. Whether you’re chasing podiums, exploring new routes, or building the ultimate do-it-all drop-bar bike, our team will help you dial in the perfect fit and component setup to match your goals. Every Dark Matter we sell reflects our commitment to precision fitting, performance tuning, and rider-first service.

If you’re looking for a gravel bike that pushes boundaries and elevates every ride, the Argon 18 Dark Matter—expertly set up at HYPT Bike Performance—is ready to take you further, faster, and with total confidence.

Geometry

Size

XXS (44–46)

XS (47–50)

S (51–53)

M (54–56)

L (57–59)

XL (60–62)

Seat Tube Height (cm)

42.0

43.5

46.0

49.5

54.0

58.5

Seat Tube Angle (°)

75.5

74.9

74.3

73.7

73.1

72.5

Head Tube Angle (°)

68.5

70.0

70.5

71.0

71.0

71.0

Top Tube Length (cm)

50.7

53.0

55.3

57.7

60.2

62.9

Chainstay Length (cm)

43.6

43.6

43.6

43.6

43.6

43.6

Wheelbase (cm)

103.0

103.6

104.5

105.9

108.0

110.1

BB Drop (cm)

8.0

8.0

7.8

7.8

7.6

7.6

Head Tube Length 3D – 0 mm (cm)

7.2

8.7

10.6

12.6

15.1

17.8

Head Tube Length 3D – 35 mm (cm)

9.5

11.2

13.1

15.1

17.6

20.3

Standover Height (cm)

71.3

72.9

75.5

78.6

82.5

86.3

Fork Length Axle-to-Crown (mm)

425

425

425

425

425

425

Fork Rake (mm)

54

54

48

48

48

48

Trail (cm)

8.6

7.6

7.9

7.5

7.5

7.5


Fit – Stack & Reach

Size

XXS

XS

S

M

L

XL

Stack Min (cm)

52.0

54.0

56.1

58.2

60.3

62.9

Stack Max w/ 3D (35 mm) (cm)

54.3

56.4

58.5

60.6

62.7

65.3

Reach (cm)

37.0

38.2

39.4

40.6

41.8

43.0

Reach w/ 3D (35 mm) (cm)

36.1

37.3

38.6

39.8

41.0

42.2


Saddle Height Range

Size

XXS

XS

S

M

L

XL

Saddle Height Min (cm)

59.0

60.5

63.0

66.5

71.0

75.5

Saddle Height Max (cm)

79.0

80.5

83.0

86.5

91.0

95.5

For precise sizing and fit recommendations, visit HYPT Bike Performance for a professional bike fit.


Build Specifications

Frameset

Component

Specification

Frame

Argon 18 Dark Matter

Fork

Argon 18 Dark Matter

Integrated Cables

Yes

Storage Optimization System

Yes (length-specific)

Wheels & Tires

Component

Specification

Wheels

DT Swiss G1800 Microspline

Tires

Vittoria Terreno T50 Mixed, 700×50c

Maximum Tire Clearance

57 mm

Drivetrain

Component

Specification

Bottom Bracket

TOKEN T47 – 24 mm

Front Derailleur

N/A

Rear Derailleur

Shimano GRX RX822 (51T max)

Crankset

Shimano GRX RX610-1, 40T

Chain

Shimano CN‑M7100, 12‑speed

Cassette

Shimano SLX CS‑M7100, 10–51T

Brakes & Shifting

Component

Specification

Shifters

Shimano GRX RX610

Brake Levers

Shimano GRX BL‑RX610‑L

Brakes

Shimano RX400

Rotors

Shimano SM‑RT70 – 160 mm front / 160 mm rear

Cockpit & Contact Points

Component

Specification

Handlebar

FSA A‑Wing Pro AGX

Stem

FSA SMR‑II

Bar Tape

Ciclovation Grind Touch

Saddle

Repente Quasar S 2.0

Seatpost

Argon 18 TD

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 64123660199

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4.6 ★★★★★
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Product Reviews
J
Verified Purchase
Jag
Fort Morgan, US
★★★★★ 5
Like it, fits perfectly
Size: Medium, Color: Halloween Khaki Bat
Nice fit & perfect colors…like it👍🏻
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
J
Verified Purchase
John Wirth
Chelsea, US
★★★★★ 5
Very nice shirts for everyday wear.
Size: Medium, Color: Olive
Repeat order on these shirts. Fits well and looks good.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
M
Verified Purchase
Mark M. Troy, MI
Boise, US
★★★★★ 5
Excellent value, consistent fit, cool, comfortable and durable.
Size: Large, Color: Army Green
I have purchased 20 plus of these shirts in the past six months. The first batch in spring, figuring if any inconsistencies or quality issues arose upon delivery, no problem. Amazon's return policy has always been hassle free. After trying on the fourth shirt and noticing no outstanding flaws or differences, all were simply opened, laundered and hung on a hanger. The material is 100 percent cotton, but assuming they are removed from the dryer immediately (medium heat) - no ironing necessary. No appreciable shrinking is observed and no outliers in the batch. My sport shirt size is men's US large regular fit. Other relevant sizes - 17.5 inch neck, 46 inch shoulders, 34 inch sleeves and 36 inch waist. Overall fit of these shirts is of appropriate roominess without bagginess. Shirt tail length is spot on, work dress code requires tucked in, and they stay tucked in. Casual requires not tucked in, and unless I am reaching for the sky with both hands while on tip toes, the shirt tail/ belt line is not breached. The sleeve length could have been extended by an inch since they taper to an elastic cuff, requiring that the sleeves are pulled back to original position following an extended reach. But given the choice, the sleeves as is are preferred over a straight cut without the elastic cuff. As an upgrade to the T shirt appearance of the shirt tail when not tucked in, the side seams end with a reinforced, one inch inverted V, a feature not typical in this price range. To date, durability has not been an issue. Fraying, fabric pilling and fading have not occurred. It is quite difficult, if not impossible, to differentiate the age of two duplicate color shirts purchased in two separate batches. Again, excellent value, consistent fit, cool, comfortable and durable!
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Reviewed in the United States on October 30, 2017
S
Verified Purchase
Sophia Eugenia
Los Angeles, US
★★★★★ 4
Decent, definitely got the job done
Size: X-Large, Color: Light Grey Heather, Size: X-Large, Color: Light Grey Heather
The came out to be a pretty decent quality for the price. Was going to a polo match and just needed something to creat on for my date
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Reviewed in the United States on April 1, 2026
D
Verified Purchase
Debashish Mitra
Lake Worth, US
★★★★★ 5
An Extinct Breed - Get before they are gone
Size: Medium, Color: Red
In my day polos used to be soft thick 100 % cotton with generous sleeves covering the upper arm till above the elbows and collars standing high and grand and covering the back of the neck till below the hairline. They had substantial structure/body (shape that held) and ultra comfortable soft cotton. This was my go to piece of clothing to step out in (as opposed to round neck collarless T-Shirts that I wore only at home or for sporting activities). However, this simple good thing was not to be taken for granted. As time went by, I watched in horror this simple evergreen staple slowly vanish - being replaced by plastic, toxic, carcinogenic trash (synthetic, polyester, 'performance', 'hi-tech') being passed as clothing riding solely on deceptive/misleading/convincing marketing and rapidly transient 'fast fashion trends'. These pieces of junk being passed as 'performance polos'/'hi-tech' had no 'body', clung to your skin like plastic, caused my sensitive skin to itch, with arms so short as if there was shortage of clothing material in the world and were of such thin cheap uncomfortable material that I would wonder how in the world do people put these on their bodies. The 'trend' continued ... Fast forward to the present day, finding the 'cotton polo of my youth' is like finding a dinosaur. The polo I grew up with is practically extinct - replaced by trash made with ever cheaper feeling and more toxic materials. Its a win win for the corporates/brands - cheap synthetic lab created materials astronomically marked up (riding on advertisement) - filling the corporate pockets unlike never before and successfully 're-programming' the minds and purchasing behavior of the new generation to accept, get used to, and even get addicted to such toxic 'hi-tech' trash. As for the manufacturing ? No problem - hire some MBA's (with zero knowledge/passion for good quality textile/garment manufacturing) - their sole purpose to be 'maximizing profits' for the next 'earnings report' and they would find the 'cheapest' offshore factory to outsource the manufacturing to. This being a continuous process - if you get a cheaper bid from another factory, just switch to it. No wonder you can never get consistent material, sizing, quality for the exact same product purchased even months apart. Not just that - even brands that sold fantastic quality 100 % cotton polos at a very reasonable price like Tommy Hilfiger etc went STEEP DOWNHILL. A Tommy Hilfiger polo being sold today is NOWHERE NEAR anything like the quality they had even a few years ago (even though still being theoritically 100 % cotton, the quality (material, cut) now is absolutely junk - in fact they went from being my favorite Polo Shirts (thick, soft, cloud like cotton with generous neck and sleeves and amazing body, texture and shape and in high quality colors and finish) to absolutely shockingly unwearable pieces of garbage (thin, rough, itchy cotton with skimpy sleeves and flat collars and dull cheap finsih and colors with NO lusture, body whatsoever). I always wish I had seen this day come. I would have stocked up on a lifetim's supply of 'real' clothing when they were still available. Given the above, I am extremely surprised (pleasantly) by this Amazon Essentials Cotton Polo. This is 100 % cotton, has generous non-skimpy sleeves and has decent material and shape reminiscent of the 100 % cotton polo I am habituated to from my time. Quality of material wise - it is about 65% - 70% of the cotton polos of yesteryears - BUT - even THAT - is like finding diamond (or a dinosaur) in these abhorrent-clothing-times for the 100 % cotton polo lover. Get this before the 'real cotton polo' is gone for good. I think I may be getting a few.
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Reviewed in the United States on August 10, 2022

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