Velopedia Bicycle Archive
2020 Giant Reign E+ 1 Pro
Original specifications: geometry for 4 published sizes.
Selling this bike? Create a shareable bike record
At a glance
- Model year
- 2020
- Category
- Mountain
- Original MSRP
- $6,000.00
- Sizes
- S, M, L, XL
- Colors
- Electric Red
- Geometry
- 4 manufacturer sizes
- In this record
- 20 specifications · archived image · original MSRP · geometry
- Archive ID
- 900002609
Original buildAluminum
Frameset
| Frame Construction | ALUXX SL-grade aluminum, 160mm Maestro suspension system, 'Boost' 148x12QR, Giant EnergyPak Plus range extender compatible |
|---|---|
| Frame Material | Aluminum |
| Fork | Fox 36 Float Performance 27.5, 170mm, 3-position Micro Adjust Grip Damper, Boost 110x15QR, e-Bike optimized |
| Rear Shock | Fox Float X2 Performance, EVOL Large Volume sleeve, 2-position lever, 205x62.5mm Trunnion mount, custom tuned |
Drivetrain
| Shifters | Shimano Deore XT, 12-speed |
|---|---|
| Front Derailleur | MRP 1X custom "V3" co-moulded TR chain guide |
| Rear Derailleur | Shimano Deore XT, 12-Speed, Shadow+ |
| Crankset | Praxis Wavetm 36T Cold Forged 4130 premium steel Praxis e-Cadet+ custom forged crankarm set (Q-factor=168, S/M:160, L/XL:165) |
| Cassette | Shimano HG-M7100, 10-51T, 12-Speed |
| Chain | KMC e.12 Turbo, EcoProteq, e-bike optimized |
Brakes
| Brakes | Shimano Deore XT, BR-M8120, 4-piston, hydraulic disc, 203mm |
|---|
Cockpit & Contact Points
| Handlebar | Giant Contact Trail, 35x800mm |
|---|---|
| Stem | Giant Contact SL 35 |
| Saddle | Giant Contact, Neutral |
| Seatpost | Giant Contact Switch, dropper, 30,9mm (S:100/M:125/L:150/XL:170) |
Wheels & Tires
| Hubs | Giant e-TR1 [F] 110x15 [R] 148x12mm Thru-axle |
|---|---|
| Rims | Giant e-TR1 27.5, Tubeless ready, 30mm inner width |
| Spokes | Giant e-TR1 |
| Front Tire | Maxxis Minion DHF 27.5x2.6" foldable, Tubeless, EXO+, 3c MaxxTerra[F]Maxxis High Roller II 27.5x2.6" foldable, Tubeless, DoubleDown, 2x120tpi, 3C MaxxTerra Compound [R] |
| Rear Tire | Maxxis Minion DHF 27.5x2.6" foldable, Tubeless, EXO+, 3c MaxxTerra[F]Maxxis High Roller II 27.5x2.6" foldable, Tubeless, DoubleDown, 2x120tpi, 3C MaxxTerra Compound [R] |
Geometry
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 16 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 406 mm | 445 mm | 482 mm | 507 mm |
| Top tube | 595 mm | 620 mm | 645 mm | 670 mm |
| Head tube | 100 mm | 110 mm | 120 mm | 130 mm |
| Head-tube angle | 64.5° | 64.5° | 64.5° | 64.5° |
| Seat-tube angle | 76° | 76° | 76° | 76° |
| Chainstay / rear center | 470 mm | 470 mm | 470 mm | 470 mm |
| Wheelbase | 1223 mm | 1249 mm | 1276 mm | 1303 mm |
| Bottom-bracket drop | 15 mm | 15 mm | 15 mm | 15 mm |
| Reach | 430 mm | 452 mm | 475 mm | 497 mm |
| Stack | 592 mm | 602 mm | 611 mm | 620 mm |
| Fork offset / rake | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 124.3 mm | 124.3 mm | 124.3 mm | 124.3 mm |
| Crank length | 160 mm | 160 mm | 165 mm | 165 mm |
| Stem length | 40 mm | 40 mm | 50 mm | 50 mm |
| Handlebar width | 800 mm | 800 mm | 800 mm | 800 mm |
| Wheel size | 27.5 | 27.5 | 27.5 | 27.5 |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
Parts & serviceability
Find replacement parts

Maxxis Minion DHF Wide Trail 3C/EXO/TR 27.5in Tire Maxx Terra, 3C/EXO/TR, 27.5x2.6
27.5x2.6
Replacement option · verify fit
More parts (2)

Shimano Deore XT RD-M8200 Rear Derailleur Max 45t, Min 9t, 12-Speed
12-Speed
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
Bike-specific inspection checklist 27 checks based on 7 archived component groups Open checklistClose checklist
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2020 Giant Reign E+ 1 Pro · Electric-assist · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: ALUXX SL-grade aluminum, 160mm Maestro suspension system, 'Boost' 148x12QR, Giant EnergyPak Plus range extender compatible · Fork: Fox 36 Float Performance 27.5, 170mm, 3-position Micro Adjust Grip Damper, Boost 110x15QR, e-Bike optimized
Suspension
Evaluate the suspension →Archived: Fork: Fox 36 Float Performance 27.5, 170mm, 3-position Micro Adjust Grip Damper, Boost 110x15QR, e-Bike optimized · Rear shock: Fox Float X2 Performance, EVOL Large Volume sleeve, 2-position lever, 205x62.5mm Trunnion mount, custom tuned
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Deore XT, 12-speed · Front derailleur: MRP 1X custom "V3" co-moulded TR chain guide · Rear derailleur: Shimano Deore XT, 12-Speed, Shadow+ · Crankset: Praxis Wavetm 36T Cold Forged 4130 premium steel Praxis e-Cadet+ custom forged crankarm set (Q-factor=168, S/M:160, L/XL:165) · Cassette: Shimano HG-M7100, 10-51T, 12-Speed · Chain: KMC e.12 Turbo, EcoProteq, e-bike optimized
Brakes
Inspect the brakes →Archived: Brakes: Shimano Deore XT, BR-M8120, 4-piston, hydraulic disc, 203mm
Wheels and tires
Check wheels and tires →Archived: Rims: Giant e-TR1 27.5, Tubeless ready, 30mm inner width · Hubs: Giant e-TR1 [F] 110x15 [R] 148x12mm Thru-axle · Front tire: Maxxis Minion DHF 27.5x2.6" foldable, Tubeless, EXO+, 3c MaxxTerra[F]Maxxis High Roller II 27.5x2.6" foldable, Tubeless, DoubleDown, 2x120tpi, 3C MaxxTerra Compound [R] · Rear tire: Maxxis Minion DHF 27.5x2.6" foldable, Tubeless, EXO+, 3c MaxxTerra[F]Maxxis High Roller II 27.5x2.6" foldable, Tubeless, DoubleDown, 2x120tpi, 3C MaxxTerra Compound [R]
Controls and contact points
Archived: Handlebar: Giant Contact Trail, 35x800mm · Stem: Giant Contact SL 35 · Seatpost: Giant Contact Switch, dropper, 30,9mm (S:100/M:125/L:150/XL:170) · Saddle: Giant Contact, Neutral · Pedals: -
E-bike system
Check the battery and electronics →Archived: Giant Reign E+ 1 Pro · electric-assist identification
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help preserve its real-world history by sharing your owner experience.
Share the details that would help another rider understand how this model fits, rides and holds up over time. Velopedia reviews every contribution before publication.
Already contributed? Send me a fresh private edit link
For privacy, Velopedia shows the same confirmation whether or not an experience exists.
Checking current listings…
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.



