Giant | SKU: 9125004105

Giant Reign 1 (2025)

$5,799⁰⁰ ~~$6,299⁰⁰~~

ALUXX SL-Grade Aluminium front and rear triangles | 160mm travel
Fox 38 Performance Elite fork | 170mm travel
Fox Float X Performance Elite shock
Shimano SLX 12-speed drivetrain

Colour: Mars Dust

S M L XL

Product variants

Pickup in-store only. Shipping not available.

Sizing Chart

Sizing and Geometry

Giant Reign

Sizing to be used as a reference only. The best way to determine your size is to visit us in-store and take the bike for a test-ride.

Frame size	Rider height
S	163-172cm
M	171-180cm
L	179-188cm
XL	187-198cm

Geometry

bike diagram with measurements referenced in table that follows

		S	M	L	XL
		LOW \| MID \| HIGH	LOW \| MID \| HIGH	LOW \| MID \| HIGH	LOW \| MID \| HIGH
A	Seat Tube Length (mm)	400	425	450	475
A1	Seat Post Insertion Depth (mm)	257	383	308	333
B	Seat Tube Angle	78.3° \| 78.7° \| 79.0°	78.3° \| 78.7° \| 79.0°	77.3° \| 77.7° \| 78.0°	77.3° \| 77.7° \| 78.0°
C	Top Tube Length (mm)	556 \| 555 \| 555	587 \| 586 \| 585	620 \| 620 \| 619	652 \| 652 \| 651
D	Head Tube Length (mm)	100	105	115	120
E	Head Tube Angle	63.5° \| 63.9° \| 64.2°	63.5° \| 63.9° \| 64.2°	63.5° \| 63.9° \| 64.2°	63.5° \| 63.9° \| 64.2°
F	Fork Rake (mm)	44	44	44	44
G	Trail (mm)	140 \| 138 \| 135	140 \| 138 \| 135	140 \| 138 \| 135	140 \| 138 \| 135
H	Wheelbase (mm)	1214 \| 1213 \| 1212	1246 \| 1245 \| 1244	1271 \| 1270 \| 1269	1304 \| 1303 \| 1302
I	Chain Stay Length (mm)	445 \| 443 \| 442	445 \| 443 \| 442	445 \| 443 \| 442	445 \| 443 \| 442
J	Bottom Bracket Drop (mm)	35 \| 30 \| 25	35 \| 30 \| 25	35 \| 30 \| 25	35 \| 30 \| 25
K	Stack (mm)	627 \| 624 \| 622	632 \| 629 \| 626	641 \| 638 \| 635	645 \| 642 \| 639
L	Reach (mm)	426 \| 430 \| 434	456 \| 460 \| 464	476 \| 480 \| 484	506 \| 510 \| 514
M	Stand Over Height (mm)	723 \| 727 \| 732	743 \| 747 \| 752	756 \| 760 \| 765	771 \| 777 \| 782
O	Stem Length (mm)	40	40	40	40
P	Crank Length (mm)	165	170	170	170
Q	Wheel Size	29"	29"	29"	29"

Shipping Information

This product: Pickup in-store only. Shipping not available.

Shipping available†

We offer shipping on select brands including: Rocky Mountain, Orbea, XDS, Icon, Jamis, Shogun, Schwinn, BYK, Kidvelo. These bikes are shipped unbuilt in their original box.

†Only bikes stocked at our Warehouse location are available for shipping.

Shipping upon request to your local bike shop

Some brands require the bike is delivered directly to a bicycle shop or mechanic for assembly, and shipping is not available to your residence. These include GT, Cannondale, .

Request a shipping quote to proceed.

Pickup in-store only

Certain bike brands cannot be shipped and are only available for Click and Collect or purchase in-store.

These include but are not limited to the following brands: Giant, Norco, Liv, Momentum, Malvern Star and Mongoose.

Pre-assembled bikes

†Any bikes in stock at our Heidelberg Heights, Hallam or Hoppers Crossing store locations are already fully assembled, and therefore only available for Click and Collect or purchase in-store.

Fully assembled when you Click & Collect

Buy Now, Pay Later with ZIP

Free service adjustment in first 6 months

Sizing and Geometry

Giant Reign

Sizing to be used as a reference only. The best way to determine your size is to visit us in-store and take the bike for a test-ride.

Frame size	Rider height
S	163-172cm
M	171-180cm
L	179-188cm
XL	187-198cm

Geometry

bike diagram with measurements referenced in table that follows

		S	M	L	XL
		LOW \| MID \| HIGH	LOW \| MID \| HIGH	LOW \| MID \| HIGH	LOW \| MID \| HIGH
A	Seat Tube Length (mm)	400	425	450	475
A1	Seat Post Insertion Depth (mm)	257	383	308	333
B	Seat Tube Angle	78.3° \| 78.7° \| 79.0°	78.3° \| 78.7° \| 79.0°	77.3° \| 77.7° \| 78.0°	77.3° \| 77.7° \| 78.0°
C	Top Tube Length (mm)	556 \| 555 \| 555	587 \| 586 \| 585	620 \| 620 \| 619	652 \| 652 \| 651
D	Head Tube Length (mm)	100	105	115	120
E	Head Tube Angle	63.5° \| 63.9° \| 64.2°	63.5° \| 63.9° \| 64.2°	63.5° \| 63.9° \| 64.2°	63.5° \| 63.9° \| 64.2°
F	Fork Rake (mm)	44	44	44	44
G	Trail (mm)	140 \| 138 \| 135	140 \| 138 \| 135	140 \| 138 \| 135	140 \| 138 \| 135
H	Wheelbase (mm)	1214 \| 1213 \| 1212	1246 \| 1245 \| 1244	1271 \| 1270 \| 1269	1304 \| 1303 \| 1302
I	Chain Stay Length (mm)	445 \| 443 \| 442	445 \| 443 \| 442	445 \| 443 \| 442	445 \| 443 \| 442
J	Bottom Bracket Drop (mm)	35 \| 30 \| 25	35 \| 30 \| 25	35 \| 30 \| 25	35 \| 30 \| 25
K	Stack (mm)	627 \| 624 \| 622	632 \| 629 \| 626	641 \| 638 \| 635	645 \| 642 \| 639
L	Reach (mm)	426 \| 430 \| 434	456 \| 460 \| 464	476 \| 480 \| 484	506 \| 510 \| 514
M	Stand Over Height (mm)	723 \| 727 \| 732	743 \| 747 \| 752	756 \| 760 \| 765	771 \| 777 \| 782
O	Stem Length (mm)	40	40	40	40
P	Crank Length (mm)	165	170	170	170
Q	Wheel Size	29"	29"	29"	29"

Push new limits on technical terrain with this enduro-ready carbon machine. With 160mm of Maestro rear suspension and a confidence-inspiring chassis, it devours rock gardens, drops, and rugged descents with total control. The three-position flip chip lets you fine-tune your geometry and switch between 27.5-inch and 29-inch rear wheels, giving you the freedom to optimise handling for every trail and every style of ride.

Race-bred suspension

A Maestro rear suspension system with 160mm of travel was developed and tested under the extreme conditions of Enduro World Series races. The trunnion mount shock has a longer stroke (62.5mm compared to 60mm on the previous generation). And the Advanced Forged Composite upper rocker arm adds stiffness and lowers overall weight.

Adjustable enduro geometry

Flip chip technology lets you switch between three settings depending on the terrain. You can select a 62.5, 63 or 63.5-degree head angle and corresponding 77.5, 77.9 or 78.3-degree seat tube angle, resulting in a 29, 24 or 19mm bottom bracket drop (size medium) to fine-tune handling for trail conditions, riding style and rear-wheel size.

Rear wheel options

Riders can choose either the stock 27.5-inch rear wheel or switch to 29. The larger 29-inch option improves stability and roll-over capabilities, while the 27.5 option delivers a more agile, snappier feel. It’s a quick and easy way to adjust the bike’s handling and feel.

Frame material

Aluminium
Frame

ALUXX SL-Grade Aluminium front and rear triangles, 160mm Maestro suspension, flip chip 3 position, 12x148mm thru-axle, 27.5 or 29-inch rear wheel compatible, integrated downtube storage, 55mm Chainline
Fork

Fox 38 Performance Elite, 170mm, GRIP X2 damper, 15x110 Kabolt X, 44mm offset, custom tuned for Giant
Shock

Fox Float X Performance Elite, 2 position, custom tuned for Giant
Handlebar

Giant Contact TR35, alloy, 35mm
Grips

Giant Tactal Pro Single lock-on
Stem

Giant Contact SL 35 S:40mm, M:40mm, L:40mm, XL:40mm
Seatpost

Giant Contact Switch AT dropper, adjustable travel, remote S: 110-140mm travel / 30.9 x 395mm M: 140-170mm travel / 30.9 x 470mm L: 170-200mm travel / 30.9 x 530mm XL: 170-200mm travel / 30.9 x 530mm
Saddle

Giant Romero
Pedals

N/A
Shifters

Shimano SLX SL-M7100, 1x12
Rear Derailleur

Shimano SLX RD-M7100 Shadow +
Brakes

Shimano Deore BR-M6120, hydraulic, Shimano RT-66 rotors [F]220mm, [R]203mm
Brake Levers

Shimano Deore BL-M6100
Cassette/Freewheel

Shimano SLX M7100, 10x51
Chain

KMC X-12
Crankset

Shimano MT512, 32t, 55mm chainline S:165mm, M:170mm, L:170mm, XL:170mm
Bottom Bracket

Shimano, press fit
Rims

Giant TRA Hookless Tubeless ready Alloy Fr: 29", Rr: 27.5" 30mm inner width
Hubs

Giant TRA MTB Alloy Hub, 6 Bolt, 110x15 [F] / 148x12 SRAM XD Drive Body Pawl Driver (Pawl 36x2 T) Thru-axle [R]
Spokes

Sapim Laser
Tyres

[F] Maxxis Assegai 29x2.5 WT, 3C MaxxTerra, EXO+, TR [R] Maxxis Minion DHR II 27.5x2.4 WT, 3C MaxxTerra, DD, TR tubeless
Extras

Tubeless prepared, 2.5" max tyre size, 36t max chainring size, MRP AMG CS chain guide
Notes

Please note that, based on component availability and other factors, specifications are subject to change without notice.
Speeds (rear)

12 Speed
Age Group

Adults, Teenagers
Gender

Mens, Unisex
Discipline

Mountain
SKUs

Mars Dust/S: 9125004104, Mars Dust/M: 9125004105, Mars Dust/L: 9125004107, Mars Dust/XL: 9125004108

Giant Reign 1 (2025)

Sizing Chart

Sizing and Geometry

Giant Reign

Geometry

Shipping Information

Race-bred suspension

Adjustable enduro geometry

Rear wheel options

Giant Reign 1 (2025)

Information

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