VelopediaBicycle Archive · Specification report

2018 Kona Unit

Velopedia Archive ID 900003557

Overview

Model year2018
BrandKona
ModelUnit
Bicycle typeMountain
Archive ID900003557
ColorsMatt Black & Grey w/ Grey & Yellow Decals
SizesS; M; L; XL

Frameset

Frame constructionReynolds 520 Butted Cromoly
Frame materialSteel
ForkKona Plus fork
Rear shockn/a

Drivetrain

Shiftersn/a
Front derailleurn/a
Rear derailleurn/a
CranksetFSA Comet Modular; Chainring: 32t
Bottom bracketFSA 7100
CassetteJoytech 18t
ChainKMC Z610
PedalsKona JS2

Brakes

BrakesBrake Calipers: Tektro HDM285; Front Brake Rotor: Tektro TR180 180mm; Rear Brake Rotor: Tektro TR160 160mm; Brake Levers: Tektro HDM285

Cockpit & contact points

HeadsetTH ZST no.10
HandlebarKona XC/BC Riser
StemKona XC/BC
SaddleWTB Volt Comp (Comp 250 size S)
SeatpostKona Thumb w/Offset 31.6mm

Wheels & tires

Hubs(F) Formula 100x9mm / (R) Formula 135x10mm
RimsWTB Scraper i40 Pinned TCS
SpokesSandvik Stainless 15g fr / 14g rr
Front tireWTB Ranger TCS 27.5x2.8"
Rear tireWTB Ranger TCS 27.5x2.8"
Wheel size27.5"

Geometry · S

Seat tube370 mm
Top tube568 mm
Head tube95 mm
Head-tube angle69°
Seat-tube angle74°
Chainstay / rear center442 mm
Wheelbase1092 mm
Bottom-bracket drop60 mm
Bottom-bracket height305 mm
Reach404 mm
Stack573 mm
Standover height690 mm
Fork offset / rake50 mm
Front center657 mm
Fork length / axle-to-crown470 mm

Geometry · M

Seat tube420 mm
Top tube596 mm
Head tube105 mm
Head-tube angle69°
Seat-tube angle74°
Chainstay / rear center442 mm
Wheelbase1121 mm
Bottom-bracket drop60 mm
Bottom-bracket height305 mm
Reach429 mm
Stack582 mm
Standover height725 mm
Fork offset / rake50 mm
Front center686 mm
Fork length / axle-to-crown470 mm

Geometry · L

Seat tube470 mm
Top tube623 mm
Head tube115 mm
Head-tube angle69°
Seat-tube angle74°
Chainstay / rear center442 mm
Wheelbase1149 mm
Bottom-bracket drop60 mm
Bottom-bracket height305 mm
Reach453 mm
Stack592 mm
Standover height760 mm
Fork offset / rake50 mm
Front center714 mm
Fork length / axle-to-crown470 mm

Geometry · XL

Seat tube530 mm
Top tube656 mm
Head tube125 mm
Head-tube angle69°
Seat-tube angle74°
Chainstay / rear center442 mm
Wheelbase1183 mm
Bottom-bracket drop60 mm
Bottom-bracket height305 mm
Reach484 mm
Stack601 mm
Standover height805 mm
Fork offset / rake50 mm
Front center747 mm
Fork length / axle-to-crown470 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 5, 2026.