Trek Marlin+ Gen 2 Frameset
Trek / Electric Mountain Bikes
Your first trail is waiting.
Marlin+ Frameset is a trail-ready e-MTB foundation built from lightweight Alpha NEXT Gold Aluminum. It’s designed around a Bosch Active Line Plus motor and 120mm fork for confident off-road handling, with size-specific wheels for a better fit — 27.5˝ on XS and S, and 29˝ on M–XL.
Based on the bike's size chart. Your complimentary baseline fit in store dials in the rest.
Ship to store · free pickup, usually ready in 4–7 business days
Questions are welcome. No pressure, no bike jargon required.
The ride, not just the specs
Marlin is the mountain bike we hand to riders getting into trails. It's simple, tough, and confidence-inspiring, so you can focus on having fun.
Ride it on your local singletrack, the greenway, or anywhere in between.
What makes it special
Starting in 2024, we began removing high-emission aluminum from our manufacturing and replacing it with low-emission aluminum made with renewable energy. By October 2025, nearly every alloy bike we make - this one included - had made the switch, driving a major drop in our footprint.
For the detail-oriented
Tap any group to see every part.
Measurements in cm unless noted.
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Rider height | 4'9"–5'1" | 5'1"–5'5" | 5'5"–5'10" | 5'10"–6'2" | 6'2"–6'5" |
| Seat tube (A on the drawing) | 34.0 | 37.0 | 42.0 | 45.0 | 50.0 |
| Seat tube angle (B on the drawing) | 73.8° | 73.8° | 73.8° | 73.8° | 73.8° |
| Head tube length (C on the drawing) | 9.0 | 10.0 | 10.5 | 11.5 | 13.5 |
| Head tube angle (D on the drawing) | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° |
| Eff. top tube (E on the drawing) | 55.1 | 58.4 | 62.0 | 65.2 | 68.2 |
| BB height (F on the drawing) | 31.3 | 31.3 | 31.8 | 31.8 | 31.8 |
| BB drop (G on the drawing) | 4.5 | 4.5 | 6.0 | 6.0 | 6.0 |
| Chainstay length (H on the drawing) | 47.0 | 47.0 | 48.5 | 48.5 | 48.5 |
| Offset (I on the drawing) | 4.6 | 4.6 | 4.2 | 4.2 | 4.2 |
| Trail (J on the drawing) | 11.0 | 11.0 | 11.4 | 11.4 | 11.4 |
| Wheelbase (K on the drawing) | 112.9 | 116.6 | 121.8 | 125.1 | 128.4 |
| Standover (L on the drawing) | 67.8 | 71.0 | 76.0 | 77.1 | 77.5 |
| Reach (M on the drawing) | 39.0 | 41.5 | 44.0 | 47.0 | 49.5 |
| Stack (N on the drawing) | 56.3 | 59.0 | 62.6 | 63.5 | 65.3 |
| Wheel size | 27.5" | 27.5" | 29" | 29" | 29" |
| Eff. seat tube angle | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° |
The Atlanta Cycling difference
Specs matter. But so does how a bike feels when you ride it. Our team is here to help you choose the right size, understand the details, and get comfortable before your first ride.
When you buy from Atlanta Cycling, you're not just getting a box with a bicycle in it. You're getting a 30-day money-back guarantee, a complimentary baseline fit, lifetime basic adjustments, and real people who want you to love every mile.
Four neighborhood stores. One shared passion.
Ansley. Alpharetta. Roswell. Vinings. Stop by, take a test ride, ask questions, and meet the people who will be here long after your first ride.
