2018 Norco Optic A3 27.5

2018 Norco Optic A3 27.5
MSRPUS$ 2,299
Wheel Size27.5″
FrameAluminum
SuspensionFull
Front Travel130mm
Rear Travel120mm
Gearing1 × 11
Drivetrain
SRAM NX
Brand
Norco

Norco’s 2018 Optic A3 27.5 is a modest component level aluminum frame crosscountry bike.

Build
FrameOptic Aluminum 110mm (29), 120mm (650B)
ForkRockshox Recon RL Gold, solo air boost 120mm (29), 130mm (650B)
Rear ShockRockshox Monarch R
Bottom BracketSR Suntour 73mm thread in
HeadsetFSA #57B tapered internal
StemAlloy MTB stem 50mm (29), 60mm (650B)
HandlebarNorco 25mm rise 6061 DB alloy 760mm
SaddleWTB Volt
SeatpostJD Trans X post 80mm XS, 100mm S, 125mm M, L,XL, 31.6mm
Pedals
GripsNorco lock on grip
Components
Front Derailleur
Rear DerailleurSRAM NX 11
ShiftersSRAM NX 11, 11-speed
CrankSR Suntour Zeron Boost 30T (29), 32T (650B) cranks w/1X narrow/wide
CassetteSRAM NX 11 11-42T
ChainSRAM 11 speed
Chain Guide
BrakesTektro HD-M285 Hydraulic w/180mm rotor
Brake LeversTektro HD-M285
Wheels
RimsWTB STP I25, TCS 25mm inner
SpokesStainless steel
Front HubNovatec 110x15 sealed bearing disc hub
Rear HubNovatec 148x12 w 5 sealed bearing
TiresMaxxis Forecaster 2.35
Gearing
1 × 1111 speed
2018 Norco Optic A3 27.5
22 mph
Category Average Virtual Bike
26 mph

The 2018 Optic A3 27.5 is geared about the same as similar bikes for riding up hills.

The 2018 Optic A3 27.5 won‘t keep up with similar bikes while riding downhill or sprinting.

Geometry

Oh snap! This frame was drawn from the actual bike geometry measurements. Roll over the table below to highlight frame dimensions.

Size
BB Drop 1818
Chainstay Length 420425
Seat Tube Angle75.975.5
Seat Tube Length 380410
Stack 575584
Reach 388410
Head Tube Angle68.068.0
Head Tube Length 97107
Wheelbase 1,0801,111
Top Tube Length 532562
BB Height 334334
Standover Height 752749
Front Center 660687
🐐 Measurements listed in millimeters and degrees
Replacement Parts
MSRPUS$ 2,299
Wheel Size27.5″
FrameAluminum
SuspensionFull
Front Travel130mm
Rear Travel120mm
Gearing1 × 11
Drivetrain
SRAM NX
Brand
Norco
Gearing
1 × 1111 speed
2018 Norco Optic A3 27.5
22 mph
Category Average Virtual Bike
26 mph

The 2018 Optic A3 27.5 is geared about the same as similar bikes for riding up hills.

The 2018 Optic A3 27.5 won‘t keep up with similar bikes while riding downhill or sprinting.

Replacement Parts
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