Worldwide shipping: $55 + duty/taxes/fees
USA Shipping: Free
lead time: 2 weeks
*chainrings not included
At A Glance
Tall captain, short stoker? or Short captain, tall stoker?
Road, Mountain or Fat tandem-onium?
More connected pedal stroke?
Have we got the tandem cranks for you. Captains and Stokers can each pick the crank length that best works for them as well as their own colors.
The 2XR Tandem Crankset uses the same great design, versatility and modularity as the “single” 2XR Crankset, but configured for twice the fun.
2XR stands for “two times radius” and is the brainchild of framebuilder Matt Appleman. Frustrated by cranks that didn’t fit people or bikes well, Appleman designed these with a rider-first approach.
Versatile and modular, these cranks offer up new fit options for a wide array of people and many tandem team configurations.
Made in USA: designed, CNC machined and finished in Minnesota out of high strength aluminum.
- Mix and match captain/stoker crank lengths, 100mm and 135-175mm: read why crank length is so important
- No proprietary tools or chainrings: see all the technical specs
- Colors, colors, and a few more colors
Why Crank Length Matters
The Key to a Better Bike
No other component controls so much of the riders motion. Your whole lower body constantly churning with every pedal stroke.
In search of optimizing fit, comfort and efficiency, Appleman’s approach to crank length challenges the archaic sizes commonly found.
After years of knee pain, Matt Appleman found short cranks vital to bike fit and has encouraged all his custom frame customers to ride appropriately sized cranks for the absolute best bike possible.
Want to know more? Read our Rider’s Guide to Crank Length
CRANK LENGTH Calculator
What crank length is right for you? It’s complicated, but as a very rough rule of thumb, use 20% of your inseam to find your crank length
Like getting nerdy with crank length? Find better ways to determine crank length.
Short Cranks for the Win and Comfort
- Better captain-stoker connection
- more aerodynamic position
- reduced pedal strike
- more comfortable
- better frame geometry
- less toe overlap
- less knee, hip and back pain
Technical SpeciFications
- Material: 2024 Aluminum
- Crank Lengths: 100, 135, 145, 155, 160, 165, 170, 175mm
(email us for a stoker FIT crank configuration, great for growing kids) - Spindles: 30mm spindle, 5 different widths for road, adventure/gravel, mountain, mid-fat, and fat bikes
- Spiders: Standard spiders for 4 and 5 bolt chainrings (mountain 104×4, road = 110×5)
- Colors: black, silver, pink, orange, gold, turquoise, purple, olive, sand, midnight blue
- BB/Frame Standards: BSA (English threaded), ITA, PF30, BB86, BB92 BB30 T47, 386EVO, BBRight, + more (note: BB90/BB95 not compatible)
- Warranty: 5 years
- Exceeds ISO 4210 crank fatigue tested to both “racing” and “mountain” test setups (single crank configuration). Tested by independent lab.
- The Outer Bearing Width of the BB must match the crank: see Specification Table below
Rider and Mechanic friendly Design
- All 2XR parts are interchangeable
- Only 5mm allen wrench and retaining ring pliers required for install (torque wrench recommended)
- Trailside friendly adjustment
- Low torque specs (5-10Nm)
FAQ’s
What power meters are compatible with 2XR Cranks?
Every pedal based power meter, even for tandems! Pedal based power meters are super versatile and you can swap them between bikes very easily. Road and SPD/Mountain versions are available from Favero, Garmin, SRM, and Wahoo (Speedplay). Spider based power meters would have limited the design and versatility of the 2XR Cranks.
Are the cranks painted?
All the cranks are painted using a high performing, specialty, aluminum formulated, water-based polyurethane. It’s really good stuff and has much lower toxicity, health, and energy impact than other paints or anodizing.
