Bay Area Dirt Bike

Earthling

Dirt Bike
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Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike
Earthling Dirt Bike

Earthling Dirt Bike

$3,500.00

PRE-ORDER CLOSED. ETA: AUGUST '25

Open your mind. Forget what you know. Reconsider the frameworks constructed to define and justify "Gravel." The Earthling delivers in the dirt, and honors the path to it. It's all possible.


Welcome to the Slug Center for self-discovery, where traction, stability, and sacred geometry merge with advanced additive technologies and custom tubing, creating the modern gravel bike you've been searching for. Touch trail. Ground yourself. Ride, Earthling.
Size
Build Kit
Material
Quantity

*Photos are not representative of the actual build kit. See below for the complete parts list. Part spec is subject to change.

Build Kit Details

  • Frameset

  • Shimano GRX

Frameset: Slug Earthling

Fork: ENVE Adventure

Headset: Slug EC34| EC44

Frameset: Slug Earthling

Fork: ENVE Adventure

Drivetrain: Shimano GRX RX820

Wheels: DT Swiss GR 1600 SPLINE

Tires: Maxxis Pacce II 2.1"

Seatpost: MSW

Stem: Promax

Handlebars: Salsa Cowchipper

Tape: MSW Anti-Slip

Saddle: Form Throne RS

Bottom Bracket: Shimano BSA

Headset: White Ind. EC34| EC44
Title

Geo Chart

50cm

52cm

54cm
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A Reach

369

374

389
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B Stack

537

556

570
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C BB Drop

74

74

74
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D ST Length

470

495

515
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E TT Length

525

535

554
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F HT Length

100

120

135
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G Chainstay

435

435

435
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H HT Angle

71

71

71
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I ST Angle

74

74

74
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J Wheelbase

1010

1021

1041
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K Fork A-C

395

395

395
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Fork Rake

50

50

50
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Standover Ht.

719

743

768
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Trail

71

71

71
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56cm

58cm

60cm

62cm
Title

401

414

426

434
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589

608

636

666
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74

74

74

74
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540

560

580

600
Title

572

590

608

626
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155

175

205

235
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435

435

435

435
Title

71

71

71

71
Title

74

74

74

74
Title

1060

1080

1101

1119
Title

395

395

395

395
Title

50

50

50

50
Title

792

811

825

844
Title

71

71

71

71
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Frame Specs

Sizes: 50-62cm

Headset: EC34 | EC44

Seatpost Diameter: 27.2mm

Internal Dropper Port on Lower Seat Tube: ...

Seat Clamp: 31.8mm

Fork Axle-Crown: 395-398mm

Fork Offset: 49-50mm

Brake Mount: Flat-mount 140mm

BB Shell: 68mm Threaded BSA

Rear Spacing: 12 x 142mm

Max Tire: 700 x 58mm

Max Chainring: 46T (see notes below)

Water Bottle Mounts: 3x (50-58cm) | 4x (60-62cm)

Rack Mounts: Rear

Included: Rear Axle, Seat Clamp, and UDH

FAQ

What is the recommended fork length?

Our geometry is based off of a 395mm fork with a 50mm offset. A 398mm ENVE adventure fork is also a great option for carrying more gear, or riding a bigger tire.
 

What is the largest rear rotor that will fit on the Earthling?

The Earthling will fit up to a 160mm rotor. The frame is 140mm-direct, so that's the minimum size that's compatible. 

What kind of headset does this bike use?

The Earthling uses external press-in headset cups. The upper cup is an external 34mm and the lower cup is an external 44mm. The SHIS name is: EC34/28.6 EC44/40.

Does the Earthling use a SRAM Universal Derailleur Hanger (UDH)?

Yes, and one is included with every frame.

Can I run SRAM Transmission on the Earthling?

Yes.

What is the max tire width for the Earthling?

We recommend a 700 x 58mm on the rear

Will 650B wheels/tires fit?

Yes. The BB will get low, so if you choose to, 650 x 55mm is the minimum recommended tire size.

What is the max chainring that will fit?

1X: 46T (47.5mm chainline). 2X: 43x30T (47.5mm chainline)
Title

Geo Chart

Frame Specs

Sizes: 50-62cm

Headset: EC34 | EC44

Seatpost Diameter: 27.2mm

Internal Dropper Port on Lower Seat Tube: ...

Seat Clamp: 31.8mm

Fork Compatibility: 395-398mm

Fork Offset: 49-50mm

Brake Mount: Flat-mount 140mm

BB Shell: 68mm Threaded BSA

Rear Spacing: 12 x 142mm

Max Tire: 700 x 58mm

Max Chainring: 46T (see notes below)

Water Bottle Mounts: 3x (50-58cm) | 4x (60-62cm)

Rack Mounts: Rear

Included: Rear Axle, Seat Clamp, and UDH

FAQ

What is the recommended fork length?

Our geometry is based off of a 395mm fork with a 50mm offset. A 398mm ENVE adventure fork is also a great option for carrying more gear, or riding a bigger tire.
 

What's the largest rear rotor that will fit on the Earthling?

The Earthling will fit up to a 160mm rotor. The frame is 140mm-direct, so that's the minimum size that's compatible. 

What kind of headset does this bike use?

The Earthling uses external press-in headset cups. The upper cup is an external 34mm and the lower cup is an external 44mm. The SHIS name is: EC34/28.6 EC44/40.

Does the Earthling use a SRAM Universal Derailleur Hanger (UDH)?

Yes, and one is included with every frame.

Can I run SRAM Transmission on the Earthling?

Yes.

What is the max tire width for the Earthling?

We recommend a 700 x 58mm on the rear

Will 650B wheels/tires fit?

Yes. The BB will get low, so if you choose to, 650 x 55mm is the minimum recommended tire size.

What is the max chainring that will fit?

1X: 46T (47.5mm chainline). 2X: 43x30T (47.5mm chainline)

Bay Area Dirt Bike
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Tech Features

Premium 3Al-2.5V
Titanium

Heat-treated with brushed finish and bead-blasted logos.

3D-printed (SLM)
Titanium yoke

Variable wall thickness for added strength and an integrated aesthetic.

Universal Derailleur
Hanger

DUH. Source a new hanger anywhere, anytime. Transmission compatible.
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Design Features

Proudly Made
in Taiwan

Proudly Made
in Taiwan