Velopedia Bicycle Archive

2026 Giant Seek 1

Original specifications: geometry for 1 published size.

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At a glance

Archive #900001293
Model year
2026
Category
Kids
Original MSRP
$3,600.00
Colors
Raw Aluminum
Geometry
1 manufacturer size
In this record
19 specifications · 8 archived images · original MSRP · geometry
Model history 6 other years

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Identification clues

2026 archived details

Published colors
Raw Aluminum
Frame
Aluminum

Clues, not proof of model year. Colors vary and components may have been replaced.

Campaign
Original buildAluminum

Manufacturer catalog

Published sizes and colors

1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published colors

Raw Aluminum

Frameset

Frame ConstructionALUXX-Grade Aluminum
Frame MaterialAluminum
ForkAdvanced-grade Composite
Fork MaterialCarbon Fiber

Drivetrain

ShiftersTRP Vistar
Rear DerailleurTRP Vistar
CranksetProwheel DMA, 30T, 130mm
Bottom BracketPress-fit
CassetteShimano 105, 12-speed, 11x36
ChainKMC X12
PedalsVP-335T

Brakes

BrakesTektro TR-35 [F/R]140mm

Cockpit & Contact Points

HandlebarGiant Contact SL Lite 320mm Hoods, Flare to 340mm Drops
StemContact OD1, -8 degrees, 60mm
SaddleGiant Grit Core Lite
SeatpostD-Fuse Composite, 300mm

Wheels & Tires

RimsGiant SLR 1 40 Carbon Disc [650B] Wheel System [F/R]18H w/DBL (Dynamic Balanced Lacing) technology
Front TireGiant Gavia Course 0, Tubeless, 650x28B, Folding
Rear TireGiant Gavia Course 0, Tubeless, 650x28B, Folding

Geometry

1 size · 10 measurements

Frame measurements by size.

All geometry measurements1 size · 10 measurements
MeasurementOne Size
Top tube427 mm
Head tube88 mm
Head-tube angle70.6°
Seat-tube angle78°
Chainstay / rear center400 mm
Wheelbase918.1 mm
Reach325.5 mm
Stack476.5 mm
Standover height610 mm
Crank length130 mm

Dimensions as recorded.

Gearing

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

All published sizes30T · 11–36T · 12-speed
Lowest0.83:1 Highest2.73:1 Total range327%
Estimated speed At 90 RPM Lowest gear5.6 mph Highest gear18.4 mph

Rear tire: 650B×28.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Try your current gearingChanged tires or gears? Calculate your setup.

Your changes apply to this calculation. The archived build stays unchanged.

Your gearing setup
Gears

Use up to three front tooth counts, separated by /. For one rear sprocket, enter the same count twice.

Rear tire

Apply the marking on your rear tire or edit its dimensions below. Older or fractional inch sizes need the ISO marking (e.g. 37-590).

For 32-622, width is 32 mm and rim diameter is 622 mm. Use the rear tire on mixed-wheel bikes. Leave both fields empty to compare ratios only.

Gear, dimension and cadence changes update results automatically.

Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.

Parts & serviceability

Find replacement parts

Original specifications
Chain · Original
KMC X12
Retailer offers
Cassette · Original
Shimano 105

12-speed, 11x36

Retailer offers
Front tire · Original
Giant Gavia Course 0

Tubeless, 650x28B, Folding

Before ordering: Check rim compatibility and tire clearance.
Retailer offers

Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.

Service essentialsQuick reference before buying parts

Archived specifications for reference. Check the fitted parts before ordering.

Front tire
Giant Gavia Course 0, Tubeless, 650x28B, FoldingCheck: Verify the fitted tire’s size marking and rim type.
Rear tire
Giant Gavia Course 0, Tubeless, 650x28B, FoldingCheck: Verify the rear size; it may differ from the front.
Drivetrain
12-speedCheck: Match the installed drivetrain family, not just its speed count.
Bottom bracket / shell
Press-fitCheck: Verify shell type and width, crank interface, and spindle length or spacers.

Not confirmed in this record: Seatpost diameter. Check the fitted parts for these details.

Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this record.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2026 Giant Seek 1 · Kids

Archived: Frame: ALUXX-Grade Aluminum · Fork: Advanced-grade Composite · Carbon Fiber

Archived: Shifters: TRP Vistar · Rear derailleur: TRP Vistar · Crankset: PROWHEEL DMA, 30T, 130mm · Bottom bracket: Press-fit · Cassette: Shimano 105, 12-speed, 11x36 · Chain: KMC X12

Archived: Brakes: Tektro TR-35 [F/R]140mm

Archived: Rims: Giant SLR 1 40 Carbon Disc [650B] Wheel System [F/R]18H w/DBL (Dynamic Balanced Lacing) technology · Front tire: Giant Gavia Course 0, Tubeless, 650x28B, Folding · Rear tire: Giant Gavia Course 0, Tubeless, 650x28B, Folding

Controls and contact points

Archived: Handlebar: Giant Contact SL Lite 320mm Hoods, Flare to 340mm Drops · Stem: Contact OD1, -8 degrees, 60mm · Seatpost: D-Fuse Composite, 300mm · Saddle: Giant Grit Core Lite · Pedals: VP-335T

Before and during the test ride

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Gallery8 images

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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