Marin Bear Valley 24 Bike 2025Ready to shred. The Marin Bear Valley 24 is a focused kids' trail bike built to put young riders on real trails with real bike performance. A lightweight Series 2 aluminum frame with proper MTB geometry, Series 2 aluminum fork, Micro SHIFT Acolyte 1x8 drivetrain with clutch rear derailleur, and Tektro hydraulic disc brakes with kid-specific short-reach levers make this a genuinely capable trail machine. Kid-specific components throughout - from the 580mm handlebar and 130mm cranks to the thin-diameter grips - keep everything proportional and confidence-inspiring for growing riders. Features Lightweight Series 2 aluminum frame with low standover, proper MTB geometry, replaceable derailleur hanger, and 24" wheels - built for real trails, not just the neighborhood Micro SHIFT Acolyte 1x8 drivetrain with clutch rear derailleur - wide-range 12-42T cassette and clutch mechanism for chain retention on technical terrain Tektro HD-J285 kids' hydraulic disc brakes with short-reach kid-specific levers - real stopping power scaled for smaller hands Kid-specific components throughout - 580mm handlebar, 50mm rise, 130mm cranks with ring guard, thin-diameter grips, and integrated saddle/seatpost sized for young riders SPECIFICATIONSFrame Series 2 Lightweight Aluminum MTB, Low Standover, 24" Wheels, Replaceable Derailleur Hanger, Disc Brake Fork Series 2 Aluminum MTB, Disc Brake Headset Threadless Front Derailleur N/ARear Derailleur Micro SHIFT Acolyte, 8-Speed, Clutch Shifters Micro SHIFT Acolyte, Short-Reach, 8-Speed Crankset Forged Alloy, 30T, 130mm, Ring Guard Bottom Bracket Sealed Cartridge Bearings, Square Taper Chain KMC, 8-Speed Cassette Micro SHIFT Acolyte, 12-42T, 8-Speed Brakes Tektro HD-J285 Kids' Specific Hydraulic Disc (Front and Rear)Wheelset Aluminum Double Wall Rims, 28HFront Hub Forged Aluminum Alloy, 28HRear Hub Forged Aluminum Alloy, 28HTires MTB, 24x2. 25"Handlebar Marin Riser, 50mm Rise, 580mm Width, 19mm OD Grip Section Stem Alloy, 40mm Grips Single Density, Thin Diameter Seatpost Aluminum, 27. 2mm, Integrated Saddle/Post Saddle Marin Integrated Saddle/Post Pedals Kids' Specific Nylon Platform Intended Use Youth Trail Note: Components are subject to change without notice. METRICINCHMarin Bear Valley 24Size One A: Seat Tube Length310B: Effective Top Tube475C: Stack461D: Reach351F: BB Drop45G: Head Tube Length105H: Head Tube Angle67 degI: Seat Tube Angle68 degJ: Standover Height600K: Chainstay Length410L: Wheelbase981Stem Length40 mm Handlebar Width580 mm Crank Arm Length152 mm Marin Bear Valley 24Size One A: Seat Tube Length12. 2B: Effective Top Tube18. 7C: Stack18. 1D: Reach13. 8F: BB Drop1. 8G: Head Tube Length4. 1H: Head Tube Angle67 degI: Seat Tube Angle68 degJ: Standover Height23. 6K: Chainstay Length16. 1L: Wheelbase38. 6Stem Length40 mm Handlebar Width580 mm Crank Arm Length152 mm | Marin Bikes | Bear Valley 24" Bike | Purple Magenta | Os | Nylon