Which size or configuration labels have geometry for the 2021 Khs VITAMIN C?

Geometry is listed for L/20.5, M/18, S/15.5, and XL/23.

What are the reach and stack of the 2021 Khs VITAMIN C in size S/15.5?

In size S/15.5, reach is 390 mm and stack is 551 mm.

What is the head tube angle of the 2021 Khs VITAMIN C?

The head tube angle is 71 degrees in size S/15.5.

What does the 2021 Khs VITAMIN C ship with?

The stock build includes microSHIFT SL-R769-2 Trigger, Kenda Kwick Roller, Bengal Aries 3 Hydraulic Disc, and Khs Aluminum 3D Forged.

Which years of the Khs VITAMIN C are on Quiver?

Quiver has the Khs VITAMIN C for 2021, 2023, and 2020.

2021

2021 Khs VITAMIN C

Reach 390 to 410 mm, stack 551 to 628 mm. The VITAMIN C build comes with Shimano Acera M3100 shifting and Kenda Kwick Roller tires.

Compare geometry

Source: bikecatalogs.com. Checked Oct 17, 2026.

Key facts

Brand: Khs
Model: VITAMIN C
Model year: 2021
Geometry labels: L/20.5, M/18, S/15.5, and XL/23
Drivetrain: Shimano Acera M3100
Geometry: Complete for every size
Checked: Oct 17, 2026

Geometry by size

2021 Khs VITAMIN C geometry by size
Measurement	L/20.5	M/18	S/15.5	XL/23
Reach(mm)	406	401	390	410
Stack(mm)	599	568	551	628
Head tube angle(°)	72	71	71	72
Seat tube angle(°)	73	73	73	73
Effective top tube(mm)	590	575	559	602
Chainstay length(mm)	440	440	440	440
BB height(mm)	280	280	280	280
Standover(mm)	800	756	714	845
Seat tube length(mm)	521	457	394	584
Head tube length(mm)	175	150	130	205

How to read a geometry chart

Stock build

11 parts

Drivetrain

microSHIFT SL-R769-2 Trigger

Shifter

Shimano Acera M3100

Derailleur

KMC Z99

Chain

Wellgo 1pc Full Aluminum

Pedals

Wheels & Tires

Kenda Kwick Roller

Tire

Weinmann DNZ18

Rim

Brakes

Bengal Aries 3 Hydraulic Disc

Brake

Cockpit

Khs Aluminum 3D Forged

Stem

Velo Silicone Foam

Grips

Seatpost & Saddle

Khs Aluminum Micro-Adjust

Seatpost

Khs Fitness Padded

Saddle

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Quick answers

Which size or configuration labels have geometry for the 2021 Khs VITAMIN C?: Geometry is listed for L/20.5, M/18, S/15.5, and XL/23.
What are the reach and stack of the 2021 Khs VITAMIN C in size S/15.5?: In size S/15.5, reach is 390 mm and stack is 551 mm.
What is the head tube angle of the 2021 Khs VITAMIN C?: The head tube angle is 71 degrees in size S/15.5.
What does the 2021 Khs VITAMIN C ship with?: The stock build includes microSHIFT SL-R769-2 Trigger, Kenda Kwick Roller, Bengal Aries 3 Hydraulic Disc, and Khs Aluminum 3D Forged.
Which years of the Khs VITAMIN C are on Quiver?: Quiver has the Khs VITAMIN C for 2021, 2023, and 2020.