Marin Bikes | 2026 Bayview Trail 20

Small wheels. Big trail energy.

The Marin Bayview Trail 20 is a youth mountain bike designed for young riders beginning their off-road riding journey with confidence, comfort, and control.

Built around Marin’s lightweight Series 1 aluminum frame, the Bayview Trail 20 combines durable Shimano components, easy-to-use gearing, and kid-specific ergonomics into a package that feels capable without becoming intimidating. Unlike heavier department store bikes, the Bayview Trail 20 is purpose-built for real riding, whether it’s neighborhood adventures, bike park laps, or first trail experiences.

Key Features

• Series 1 Aluminum Frame
Lightweight and durable aluminum construction designed specifically around 20-inch wheels for stable and confidence-inspiring handling.

• Kid-Specific Disc Brake Setup
Tektro mechanical disc brakes paired with short reach brake levers provide better control and easier braking for smaller hands.

• Shimano 1x7-Speed Drivetrain
Reliable Shimano Altus drivetrain with simple twist shifting helps young riders focus more on riding and less on complicated controls.

• Rigid Steel Fork
Durable steel fork keeps the front end simple, predictable, and low-maintenance while improving steering precision.

• Multi-Surface Tire Setup
20x2.125” tires deliver dependable grip and comfort across pavement, gravel paths, and light trail terrain.

Technical Specifications

• Category
Youth Mountain Bike

• Discipline
MTB

• Frame
Series 1 6061 Aluminum, 20” Wheels, IS Seatstay Disc Mounts, 135mm Dropouts

• Fork
Steel Rigid Fork, 100mm Spacing, QR Lever

• Drivetrain
Shimano Altus 1x7-Speed

• Shifter
Shimano Revo Twist 1x7-Speed

• Crankset
Forged Alloy, 30T, 115mm, Ring Guard

• Cassette
Shimano CSHG200, 7-Speed, 12-32T

• Chain
KMC Z8

• Bottom Bracket
Sealed Cartridge Bearings, Square Taper

• Brakes
Tektro MDM280 Mechanical Disc Brakes, 160mm Rotors

• Brake Levers
Kids Specific Short Reach Alloy Lever

• Wheelset
Marin Double Wall Alloy Rims with Forged Alloy Hubs

• Tires
Multi Surface, 20”x2.125”

• Handlebar
Marin Riser, 30mm Rise, 580mm Width

• Stem
Marin Alloy, 40mm

• Saddle
Marin Kids MTB Saddle

• Pedals
Kids Specific Nylon Pedals

• Weight
Not specified by manufacturer.

• Color Options
Black-Gold (#000000 / #D4AF37)
Teal-Silver (#008080 / #C0C0C0)

Geometry (20")

• Stack
429.2mm

• Reach
300mm

• Head Tube Angle
67°

• Seat Tube Angle
75°

• Effective Top Tube
415mm

• Chainstay Length
355mm

• Wheelbase
859.5mm

• Standover Height
501.2mm

• Bottom Bracket Height
231mm

• Handlebar Width
580mm

• Stem Length
40mm

• Crank Length
114mm

Built for young riders discovering their first real taste of trail riding and outdoor adventure.