Marin
Marin Alcatraz Dirt Jump Frame Kit 2026
Color
Size
Click & Collect
Marin Alcatraz Dirt Jump Frame Kit 2026
Red/Purple / Short
Unit 9, Hills Hire Centre, Johnstown Rd, Dún Laoghaire, Co. Dublin
Unit 9, Hills Hire Centre,Johnstown Rd,Dún Laoghaire,Co. Dublin
012840609Warehouse
Unit 9, Hills Hire Centre,Johnstown Rd,Dún Laoghaire,Co. Dublin
+3532840609Handling hard knocks, big sends and lightning-fast acceleration, the Alcatraz 2 frameset is your dream build’s foundation. Its Series 3 Aluminum frame is big-line tough and spin-it light. Fine-tuned by Matt Jones, it’s got short chainstays for poppy manuals and a low, short frame so it won’t cramp your style – its geometry lets you level up without limits.
Specifications
Frame:
Series 3 6061 Aluminum, 26” Wheels, 135x10mm Horizontal Dropouts, 73mm Threaded BB, ISCG 05 Tabs
Headset:
FSA No 57E, Semi-Sealed Cartridge Bearings, 1 1/8" x 1 1/2”
Extras:
Marin Chain Tension Device Marin MTB Seat Clamp, Bolt Type
Geometry

| S | L | |
|---|---|---|
| Stack | 575 | 580 |
| Reach | 385 | 430 |
| Headtube Angle | 69 | 69 |
| Headtube Length | 115 | 120 |
| Seattube Angle | 69 | 69 |
| Seattube Length | 320 | 320 |
| Toptube (Effective) | 600 | 646 |
| Chainstay Length | 395 | 395 |
| Wheelbase | 1037 | 1083 |
| BB Height | 317 | 317 |
| BB Drop | 22 | 22 |
| Standover | 370 | 400 |
| Fork Offset | 42 | 42 |
| Stem Length | 40 | 40 |
| Crank Length | 170 | 170 |
| Seatpost Diameter | 30.9 | 30.9 |
