VelopediaBicycle Archive · Specification report

1998 K2 ProFlex 4500C

Velopedia Archive ID 77736

Overview

Model year1998
BrandK2
ModelProFlex 4500C
Bicycle typeMountain bike, front & rear suspension
Archive ID77736
Original MSRP$2,449.00
ColorsNatural carbon
SizesLarge, medium, way big

Frameset

Frame constructionLaminated carbon fiber
Frame materialCarbon-reinforced thermoplastic
ForkNoleen Cross-Link ELT
Fork materialAluminum, linkage crown
Rear shockNoleen NR-4 Piggyback, 4.0" travel

Drivetrain

Component groupShimano Deore XT
ShiftersShimano Deore XT RapidFire SL
Front derailleurShimano Deore LX top-swing, bottom-pull/clamp-on 31.8mm
Rear derailleurShimano Deore XT SGS
CranksetShimano Deore LX, 22/32/42 teeth
Bottom bracketShimano BB-UN72, 113mm spindle
BB shell width73mm English
Rear cogs8-speed, 11 - 30 teeth
ChainSachs PC-51, 1/2 x 3/32"
PedalsK2 Mag C

Brakes

BrakesShimano Deore LX V-Brake brakes, Shimano Deore LX levers

Cockpit & contact points

Headset1 1/8"
HandlebarTitec Enduro 141
Handlebar extensionsAluminum
StemAluminum
SaddleSelle Royal
SeatpostTitec PG, 27.2mm diameter

Wheels & tires

HubsShimano Deore LX
RimsSun Rims Sub 432, 32-hole
SpokesDT stainless steel, 1.8mm double-butted
Spoke nipplesAlloy nipples
Front tire26 x 2.10" Panaracer Duster II kevlar
Wheel size26" wheels

Geometry · Legacy reference

Top tube587 mm
Head-tube angle70.7°
Seat-tube angle72.7°
Chainstay / rear center436 mm
Wheelbase1089 mm
Fork offset / rake44 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 29, 2026.