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Haro MTB

Flightline One 27.5

Flightline One 27.5

Regular price $429.99
Regular price $579.99 Sale price $429.99
Sale Out of stock

SKU: SKU:11082

The 2021 Flightline One 27.5 model features a brand new X6 series alloy frame design with internal cable routing and an HL suspension fork with 80mm of travel to smooth out all the bumps. The FL One 27.5 model features alloy double-wall rims fitted with a Shimano cassette rear hub, and 2.2" wide tires with a multi-surface tread pattern. For 2021, we have switched to 27.5" wheels as the main wheel size on the FL One models. Following an undeniable trend towards taller and faster rolling wheels than the 26" size, The FL One 27.5 platform is ideally suited for all-around riding and an introduction to fire-roads and easy MTB trails.

Sizing Guide

Size Table
XS5'1" - 5'5"155 - 165
S5'4" - 5'9"162.5 - 175
M5'8" - 6'172.5 - 182.5
L5'11" - 6'3"180 - 190


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  • New FL X6 Series 27.5" frame w/ internal cable routing
  • HL CH-389 27.5" suspension fork w/ 80mm travel
  • 1-1/8" internal Threadless headset
  • Aluminum 42/34/24T crankset
  • Shimano Tourney TY-300 rear derailleur
  • Shimano EF-41 3x7-spd shifters
  • Shimano CS-HG200 7-spd 12-32T cassette
  • Shimano TY500 7-spd cassette rear hub
  • Aluminum double-wall rims

Collapsible content


FrameNew MY21 Haro Flightline FL4G 6000 series Aluminum | for 27.5" wheels | Internal cable Routing
ForkHL CH-389 | 27.5" 80mm Travel
Frame ShockN/A
ColorsMatte Black / Metallic Blue, Grey Fade
CranksSamox SAC26 Aluminum 42/34/24T | 170/175mm
PedalsNylon body, Chromoly axles,Platform
ChainKMC Z7 | 7-spd | 1/2"*3/32"
Bottom BracketSealed cartridge
Front DerailleurShimano Tourney TY-500
Rear DerailleurShimano Tourney TY-300
Derailleur ShifterShimano EF-41 3x7-spd
Freewheel/CassetteShimano CS-HG200 7-spd cassette 12-32T
TiresH-5129 | 27.5 x 2.2"
Wheels/RimsXD-180 aluminum double wall
HubsPivit alloy front hub | Shimano TY-500 cassette rear hub | 32h
BrakesPromax TX-121 V-Brakes
Brake LeversShimano EF-41
Grips/TapeHaro MTB Kraton
HandlebarPivit aluminum 25mm riser bar 31.8mm
StemPivit melt forged, 31.8mm
Headset1-1/8" threadless Internal | loose ball | alloy 10mm top cone
SaddleHaro Flightline
Seat PostPivit alloy micro adjust 30.9x350mm
Seat ClampPivit alloy 34.9mm quick release


Geometry frame chart
Geometry & Sizing
A. Seat Tube (C-T)356mm (14")406mm (16")457mm (18")508mm (20")
B. Top Tube (Effective)566mm (22.3")592mm (23.3")622mm (24.5")633mm (24.9")
C. Head Tube Angle68°68°68°68°
D. Seat Tube Angle72.5°72.5°72.5°72.5°
E. Chainstay Length432mm (17")432mm (17")432mm (17")432mm (17")
F. BB Drop45mm (1.8")45mm (1.8")45mm (1.8")45mm (1.8")
G. Wheelbase1064mm (41.9")1090mm (42.9")1114mm (43.9")1133mm (44.6")
H. Head Tube Length100mm (3.9")100mm (3.9")110mm (4.3")120mm (4.7")
I. Standover667mm (26.3")684mm (26.9")726mm (28.6")750mm (29.5")
J. Stack Height580mm (22.8")580mm (22.8")589mm (23.2")598mm (23.5")
K. Reach383mm (15.1")409mm (16.1")429mm (16.9")444mm (17.5")
L. Fork Heightmm (")mm (")mm (")mm (")
M. Fork Offset33mm (1.3")33mm (1.3")33mm (1.3")33mm (1.3")
N. Stem Length60mm60mm60mm70mm
O. Bar Widthmmmmmmmm
P. Crank Lengthmmmmmmmm

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*Specifications are subject to change without notice

*Actual retail price may vary based on any added dealer freight, tax, and assembly fees