The Rift Zone EL1 is basically Marin going “right, let’s keep the fun trail feel, but take the edge off the climbs.” With the Bosch SX motor it’s not one of those big, heavy eMTBs that feels like a motorbike—it’s lighter, more playful, and still feels like you’re actually riding a proper MTB, just with a bit of a tailwind when things point uphill.
On Forest of Dean trails, that’s actually a pretty sweet spot. You’d get:
- easy boosts up the punchy climbs without killing the flow
- still proper trail-bike handling on the descents
- less “bulk” than full-power eMTBs, so it doesn’t feel like a tank on tighter, rooty sections
The spec on the EL1 (Marzocchi fork/shock, Shimano CUES, TRP brakes) is basically “solid and sensible” rather than flashy—very much the kind of thing that would survive year-round muddy Forest of Dean laps without fuss.
So yeah, if you walked into Dean Forest Cycles asking for something that feels like a normal trail bike but helps you link more laps without getting cooked on climbs, this would probably be right in their wheelhouse.
SPECIFICATIONS
-
FRAME
All New Series 4 Alloy Lightweight E, 140mm MultiTrac Suspension, Integrated Battery/Charging Port, 148mm Rear Thru-Axle
-
FRONT SUSPENSION
Marzocchi Bomber Z1 150mm Travel, 29, 110x15 Kabolt Thru Axle, 44mm Offset
-
REAR SUSPENSION
Marzocchi Bomber Air Inline, Custom Tune, 210x55mm, 25xM8 Upper & Lower Mount
-
RIM
Marin Aluminum Double Wall, 29" Diameter, 32mm Inner Rim Width, Pinned Joint, Disc Specific, Tubeless Compatible
-
HUB REAR
Shimano FHTC500, 148x12 Thru Axle, Microspline, 32H, Centerlock
-
HUB FRONT
Shimano HB-TC500, 110x10 Thru Axle, 32H, Centerlock
-
SPOKES
14g Black Stainless Steel
-
TIRES
Front: Maxxis Minion DHF, 29x2.4" MAXXGRIP, Tubeless ready, EXO+, Rear: Maxxis Forecaster 29x2.4", Tubeless Ready MAXX TERRA EXO+
-
DERAILLEUR REAR
Shimano CUES RD-U6000 GS, 10-Speed
-
DERAILLEUR FRONT
-
-
SHIFT LEVER
Shimano CUES SL-U6000-10R, 10-Speed
-
CRANKSET
e*thirteen e*spec Plus, 160mm Length, 34T
-
MOTOR
Bosch Performance Line SX, 600W, 55Nm torque
-
CHAIN
Shimano LG500
-
CASSETTE
Shimano CS-LG300-10, 11-48T
-
BRAKES FRONT
TRP Slate EVO, 4-Piston Hydraulic Disc, Resin Pads, 203mm Rotor
-
BRAKES REAR
TRP Slate EVO, 4-Piston Hydraulic Disc, Resin Pads, 203mm Rotor
-
BRAKE LEVERS
TRP Slate EVO Hydraulic Lever, I-Spec EV Compatible
-
HANDLEBAR
Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 28mm Rise, 5º Up, 9º Back
-
STEM
Marin 3D Forged Alloy, 35mm
-
GRIPS
Marin Grizzly Lock On
-
HEADSET
FSA Custom, Adjustable HTA Design
-
SEATPOST
TranzX, YSI34 QL, Plastic 1x Remote, Size S 150mm Travel, Size M and L 170mm Travel, Size XL 200mm Travel, 34.9mm
-
SADDLE
Marin Speed Concept
-
PEDALS
Marin MTB Plastic
-
BATTERY
Bosch CompactTube 400Wh Internal
-
DISPLAY
Bosch BRC3100 Systems Controller
-
SWITCH
Bosch BRC3300 Bluetooth Remote 22.2mm Clamp
-
EXTRAS
e*thirteen e*Spec Chainguide
-
EXTRAS
Bolt-On 12mm Thru-Axle, 174mm Length, 1.0 Thread Pitch, 16.5mm, Tapered Head, Bosch EB12.110.016; 2A Charger
-
RANGE, CHARGING TIME
15-55 miles (Based on Rider Weight, Terrain, Climate and Level of Assist Used), 6 Hours (estimated, under ideal conditions)
Specifications, pricing, and availability are subject to change without notice.
GEOMETRY
Geometry configuration
- Front/Rear Wheels: 29"/29"
- BB and Chainstay: n/a
- Headtube Angle: 0° Headset Cup

|
S |
M |
L |
XL |
| ASTACK |
618.74 |
632.33 |
641.4 |
645.93 |
| BREACH |
430 |
460 |
490 |
520 |
| CHEADTUBE ANGLE |
65° |
65° |
65° |
65° |
| DHEADTUBE LENGTH |
100 |
115 |
125 |
130 |
| ESEATTUBE ANGLE |
77° |
77° |
77° |
77° |
| FSEATTUBE LENGTH |
400 |
420 |
430 |
460 |
| GTOPTUBE EFFECTIVE |
572.85 |
605.99 |
638.08 |
669.12 |
| HBB HEIGHT |
342 |
342 |
342 |
342 |
| IBB DROP |
36 |
36 |
36 |
36 |
| JCHAINSTAY |
440 |
440 |
440 |
440 |
| KWHEELBASE |
1188.81 |
1225.15 |
1259.38 |
1291.49 |
| LSTANDOVER HEIGHT |
674.75 |
687.74 |
691.98 |
699.2 |
| MFORK OFFSET |
44 |
44 |
44 |
44 |
| SEATPOST DIAMETER |
34.9 |
34.9 |
34.9 |
34.9 |
| HANDLEBAR WIDTH |
780 |
780 |
780 |
780 |
| STEM LENGTH |
35 |
35 |
35 |
35 |
| CRANK LENGTH |
160 |
160 |
160 |
160 |
All lengths in millimeters
SUSPENSION SETUP
REAR SHOCK SETUP
Recommended Sag = 30%/19.5mm
Step 1: Set correct pressure in rear shock.
Step 2: Sit on the bike and cycle the suspension (*with correct riding gear).
Step 3: Reset O-ring and sit on the bike, DO NOT BOUNCE, carefully step off.
Step 4: Measure sag (from o-ring to seal of shock), If it does not match the bike’s recommended sag in millimeters repeat process.
Step 5: Adjust rebound setting to ensure proper control.
FORK SETUP
Marin recommends that all bikes front and rear suspension feel balanced
Step 1: After rear sag is set follow the recommended pressure from the fork manufacturer.
Step 2: Bounce evenly up and down on the bike, cycling the suspension up and down to make sure both front and rear suspension feel balanced, if the front does not match the rear add or release pressure.
Step 3: Once the bike feels balanced adjust the rebound damping to ensure proper control.