2025 Marin Bikes Rift Zone Base M (29)
Build
700C/29 in × 2.35 in
Insights
Somewhat upright stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Marin Bikes Rift Zone
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 637.3mm |
| Reach | 460mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, C-T | 400mm |
| Top Tube Length, Effective/Horizontal Center | 605mm |
| Top Tube Slope | 24.2deg |
| Head Tube Angle | 65.5deg |
| Seat Tube Angle | 77deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 35mm |
| Bottom Bracket Height | 335.7mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 428.6mm |
| Front-Center | 777.3mm |
| Front-Center Horizontal | 776.5mm |
| Wheelbase | 1205.1mm |
| Fork Offset/Rake | 44mm |
| Trail | 120.6mm very high |
| Mechanical Trail | 109.7mm |
| Wheel Flop | 45.5mm |
| Standover Height | 691.2mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 236.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 165.7mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.35in |
| Tire Outer Diameter | 741.4mm |
| Bike Length with Tires | 1946.5mm |
| Crank Length | 170mm |
| Handlebar Width | 780mm |
| Stem Length | 35mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.marinbikes.com/au/bikes/2025-rift-zone-1-2#geometry