Giant Fathom 2 27.5" Mountain Bike 2020 - Hardtail MTB

Get your dose of singletrack with more confidence and control on the Giant Fathom 2 27.5. The combination of a lightweight hardtail frame, 100mm or 120mm suspension fork, 27.5 wheels with wide rims and cushy high-volume tyres delivers loads of traction, speed and fun on the trail.
Key Features:
- ALUXX-SL-Grade alloy frame with dialled MTB geometry
- Giant Crest fork for 120mm bump soaking suspension travel
- SRAM SX Eagle 1x12 speed drivetrain for a wide gear range
- Tektro hydraulic disc brakes for all-weather speed control
- Giant AM 27.5” wheels with 2.6” Maxxis tubeless tyres
- Sizes: Small, Medium, Large, X Large
- Colours: Desert Sand
- The Giant Fathom 2 27.5 is available with 0% APR finance
With its lightweight ALUXX SL aluminium frame, 27.5 wheels and high-volume tyres, the new Fathom is a great choice for technical terrain and singletrack shredding. It blends the efficient ride quality of a classic hardtail with the confident ride quality of larger tyres that absorb bumps and give you more traction—so you can tackle rougher trails with total control. The new frame is designed with trail-friendly geometry that includes a more relaxed head angle made for 100mm / 120mm suspension fork.
Highlights:
- Proven alloy performance - ALUXX SL aluminium frameset is hand-built in-house by the world leader in aluminium engineering.
- Traction and stability - Frame geometry is designed to optimise the confident, stable handling of 27.5 wheels with plush high-volume tyres—ideal for rugged, adventurous terrain.
- Trail tuned - More relaxed frame geometry and control-focused components deliver better handling on the trail.
All Tredz bikes are:
- Fully built & ready to ride
- Fully checked & tested by Cytech qualified mechanics
- Available with 0% APR finance on any basket over £99
- 365 day no hassle returns
- Free delivery in the UK Mainland on a date that suits you
In the box with every Tredz bike is:
- Free Tredz 9 key trail tool
- Free Tredz pedal spanner
- Free basic pedals
- Tredz drawstring kit bag
- 16 point quality control check sheet
- Basic bike setup instructions
- Free Cycle Plan insurance voucher (8 weeks)
Occasionally, without notice, manufacturers change product design and/or specifications.
Giant Fathom Sizing and Geometry
Inside Leg (Inches) Vs Rider Height (Feet & Inches) |
26” |
27” |
28” |
29” |
30” |
31” |
32” |
33” |
34” |
35” |
36” |
37” |
5’ 3” |
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S |
S |
S |
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5’ 4” |
S |
S |
S |
S |
S |
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5’ 5” |
S |
S |
S |
S |
S |
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5’ 6” |
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S |
S |
S |
S |
S |
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5’ 7” |
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S |
S |
S |
M |
M |
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5’ 8” |
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M |
M |
M |
M |
M |
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5’ 9” |
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M |
M |
M |
M |
M |
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5’ 10” |
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M |
M |
M |
M |
M |
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5’ 11” |
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M |
M |
M |
M |
M |
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6’ 0” |
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M |
M |
L |
L |
L |
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6’ 1” |
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L |
L |
L |
L |
L |
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6’ 2” |
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L |
L |
L |
L |
L |
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6’ 3” |
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L |
L |
L |
L |
L |
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6’ 4” |
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L |
L |
XL |
XL |
XL |
Giant Fathom 27.5 Geometry
S | M | L | XL | |
---|---|---|---|---|
SEAT TUBE LENGTH (mm) | 390 | 445 | 480 | 530 |
SEAT TUBE ANGLE | 73.5° | 73.5° | 73.5° | 73.5° |
TOP TUBE LENGTH (mm) | 585 | 605 | 625 | 645 |
HEAD TUBE LENGTH (mm) | 100 | 110 | 125 | 140 |
HEAD TUBE ANGLE | 67.0° | 67.0° | 67.0° | 67.0° |
FORK RAKE (mm) | 42 | 42 | 42 | 42 |
TRAIL (mm) | 108.2 | 108.2 | 108.2 | 108.2 |
WHEELBASE (mm) | 1110 | 1131 | 1153 | 1174 |
CHAIN STAY LENGTH (mm) | 425 | 425 | 425 | 425 |
BOTTOM BRACKET DROP (mm) | 45 | 45 | 45 | 45 |
STACK (mm) | 588 | 598 | 611 | 625 |
REACH (mm) | 411 | 428 | 444 | 460 |
STAND OVER HEIGHT (mm) | 691 | 731 | 745 | 784 |
HANDLEBAR WIDTH (mm) | 780 | 780 | 780 | 780 |
STEM LENGTH (mm) | 40 | 50 | 60 | 70 |
CRANK LENGTH (mm) | 170 | 175 | 175 | 175 |
WHEEL SIZE | 27.5" | 27.5" | 27.5" | 27.5" |
Giant Fathom 29 Geometry
M | L | XL | |
---|---|---|---|
SEAT TUBE LENGTH (mm) | 445 | 480 | 530 |
SEAT TUBE ANGLE | 73.5° | 73.5° | 73.5° |
TOP TUBE LENGTH (mm) | 605 | 625 | 645 |
HEAD TUBE LENGTH (mm) | 100 | 115 | 130 |
HEAD TUBE ANGLE | 69.0° | 69.0° | 69.0° |
FORK RAKE (mm) | 42 | 42 | 42 |
TRAIL (mm) | 100.5 | 100.5 | 100.5 |
WHEELBASE (mm) | 1121 | 1142 | 1163 |
CHAIN STAY LENGTH (mm) | 442 | 442 | 442 |
BOTTOM BRACKET DROP (mm) | 55 | 55 | 55 |
STACK (mm) | 608 | 622 | 636 |
REACH (mm) | 425 | 441 | 457 |
STAND OVER HEIGHT (mm) | 739 | 751 | 782 |
HANDLEBAR WIDTH (mm) | 780 | 780 | 780 |
STEM LENGTH (mm) | 70 | 80 | 90 |
CRANK LENGTH (mm) | 175 | 175 | 175 |
WHEEL SIZE | 29" | 29" | 29" |
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