Marin Tam 1 Bike 2026More miles, more smiles. The Marin Tam 1 packs XC race-ready performance into a more approachable aluminum platform. A Series 4 frame and 120mm of Iso Trac flexstay suspension keep things simple and light, while the 130mm X-Fusion Rezza fork and matching Rezza shock handle the rough stuff without adding complexity. A slack-for-XC 65-degree head angle and 76-degree seat tube angle strike a versatile balance between climbing efficiency and descending confidence, and short 435mm chainstays keep the 29" wheels lively. Micro SHIFT's Advent MX 11-speed drivetrain and an X-Fusion Manic LC dropper round out a build ready for long days on the trail. Features Series 4 Aluminum frame with 120mm of Iso Trac flexstay suspension a simplified pivot design that trims weight and maintenance without giving up performance X-Fusion Rezza fork and shock matched suspension tuned to soak up rough XC and trail terrain65-degree head angle and 76-degree seat tube angle for confidence on descents, and efficiency on climbs X-Fusion Manic LC dropper post with size-specific travel so every rider gets the drop they need Room for two water bottles inside the front triangle keeps you stocked for long days out Universal Derailleur Hanger and Boost spacing for easy-to-source parts and simple maintenance SPECIFICATIONSFrame Series 4 Aluminum, 29" Wheels, 120mm Iso Trac Suspension Platform, Full Internal Cable Routing, Chainstay Mounted 160mm Disc Mount, 148x12mm Boost Thru-Axle, 73mm BB Shell, ISCG05 Tabs Fork X-Fusion Rezza, 130mm Travel, Fine-Cut Damper RCP 3-Position, 110x15mm Bolt-On Axle, 44mm Offset Rear Shock X-Fusion Rezza, RLX 3-Position Compression Adjust, 190x45mm, B-Tune Headset FSA No 57E, Semi-Sealed Cartridge Bearings, 1-1/8" x 1-1/2"Shiftersmicro SHIFT Advent MX, SL-M7115-R, 11-Speed Front Derailleur N/ARear Derailleurmicro SHIFT Advent MX, RD-M7005M, 11-Speed Crankset Marin Forged Alloy, Integrated Steel 32T Narrow Wide Chainring, 170mm Bottom Bracket External Sealed Cartridge Bearing Chain KMC X-11, Silver and Black Cassettemicro SHIFT Advent CS-H114, 11-50T, 11-Speed Brakes Tektro HD-M535 Hydraulic Disc, 180mm Rotors (Front and Rear)Wheelset Marin Aluminum Double Wall Rims, 29mm Inner, 28H, Tubeless Compatible, Novatech Hubs, 14g Black Stainless Steel Spokes Tires Delium Fast, 29x2. 4", Light Construction, Dual Compound, Tubeless Ready Handlebar Marin Mini-Riser, 6061 Double Butted Aluminum, 780mm Width, 20mm Rise Stem Marin 3D Forged Alloy, 45mm Grips Marin Grizzly Lock-On Seatpost X-Fusion Manic LC Dropper, 30. 9mm, S: 150mm Travel; M: 170mm Travel; L-XL: 200mm Travel Saddle Marin Speed Concept Intended Use XC, Trail Note: Components are subject to change without notice. METRICINCHMarin Tam 1Size Small Medium Large Extra Large A: Seat Tube Length400410450500B: Top Tube Length562. 7595. 7623. 7656. 7C: Stack593. 8603612621D: Reach425455480510E: BB Height333333333333F: BB Drop38383838G: Head Tube Length90100110120H: Head Tube Angle65 deg65 deg65 deg65 degI: Seat Tube Angle76 deg76 deg76 deg76 degJ: Standover Height594595719744K: Chainstay Length435435435435L: Wheelbase116612001229. 61263. 7Fork Offset44444444Crank Arm Length170 mm170 mm170 mm170 mm Handlebar Width780 mm780 mm780 mm780 mm Suggested Rider Height Frame Size Small Medium Large Extra Large Rider Height----Marin Tam 1Size Small Medium Large Extra Large A: Seat Tube Length15. 716. 117. 719. 7B: Top Tube Length22. 223. 524. 625. 9C: Stack23. 423. 724. 124. 4D: Reach16. 717. 918. 920. 1E: BB Height13. 113. 113. 113. 1F: BB Drop1. 51. 51. 51. 5G: Head Tube Length3. 53. 94. 34. 7H: Head Tube Angle65 deg65 deg65 deg65 degI: Seat Tube Angle76 deg76 deg76 deg76 degJ: Standover Height23. 423. 428. 329. 3K: Chainstay Length17. 117. 117. 117. 1L: Wheelbase45. 947. 248. 449. 8Fork Offset1. 71. 71. 71. 7Crank Arm Length170 mm170 mm170 mm170 mm Handlebar Width780 mm780 mm780 mm780 mm Suggested Rider Height Frame Size Small Medium Large Extra Large Rider Height---- | Marin Bikes | Tam 1 Bike | Grey/blue | L