2XR Crankset

From $485

2XR Crank Arms
Length (mm)
2XR Spindle
2XR Spider
2XR Spindle Bolts
Black and silver = base price Colors: crank arms +$50, spindle bolts +$25, spider +$25 *chainrings not included, but available separately in shop

At A Glance

The 2XR Crankset was developed by framebuilder Matt Appleman to improve the interaction between body and bike.

Versatile and modular, these cranks offer up new fit options for a wide array of people and a full fleet of bikes.

100% Made in the USA. Designed and CNC machined in Minnesota out of high strength aluminum.

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 shorter cranks vital to bike fit and has encouraged all his custom frame customers to ride appropriately sized cranks for the absolute best bike possible.


As a rule of thumb, use 20% of your inseam to find your crank length

Shorter Cranks for the Win and Comfort

  • more aerodynamic position
  • reduced pedal strike
  • more comfortable
  • less toe overlap
  • better frame geometry
  • less knee, hip and back pain
  • reduce dead spot

What Cranks Work for My Bike?

Road(ish) Bikes

Use ROAD SPINDLE + 110×5 SPIDER for road, gravel, CX type bikes or bikes with road drivetrains (like Ultegra, Force, Record, etc…)

Use as 1x or 2x chainring (1x use outside position).

For the track or fixie bikes, use the Road spindle with 144×5 Track spider.

Q-Factor = 150mm

Adventure/Gravel Bikes

 Use ADVENTURE SPINDLE + 110×5 SPIDER if you’ve got a gravel bike using a widely spaced gravel or mountain drivetrain (like Shimano GRX or similar).

1x or 2x chainring compatible.

Use ADVENTURE SPINDLE + 104×4 SPIDER if you have a mountain bike that is designed for/accepts narrow Q-factor cranks. Measure your frame to ensure there’s enough clearance between the crank arms and chain stays.

Q-Factor 156mm

Appleman gravel crankset, orange crank arms, purple spider

Mountain Bikes

Use the MOUNTAIN SPINDLE with a 104×4 SPIDER if you’ve got a mountain bike.

Mounting the chainring on the inner position provides standard/boost chain line while mounting on the outside position provides super-boost chain line.

Q-Factor = 168mm

Mid-fat Bikes

Use the MID-FAT SPINDLE and 104×4 SPIDER if you’ve got a fat bike with a narrow q-factor (like the Otso Voytek or similar).

Mount the chainring on the outer position.

For some super-boost bikes, the MID-FAT SPINDLE would give you a wide q-factor. Use the 104×4 SPIDER with the chainring mounted on the inside position.

Q-Factor = 183mm

fat Bikes

Use the FAT spindle with a 104×4 Mountain spider if you’ve got a fat bike, . Mounting the chainring on the inner portion provides a chainline for 177mm rear ends and mounting on the outside provides a chainline for197mm rear ends

Q-Factor = 201mm

Technical SpeciFications

  • Material: High-strength, high-fatigue aluminum
  • Crank Lengths: 135, 145, 155, 165, 175mm
  • 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, track = 144×5)
  • Colors: black, silver, pink, orange, yellow, turquoise, purple, olive, sand, brown
  • 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. Tested by independent lab.
  • The Outer Bearing Width of the BB must match the crank: see Specification Table below

Rider and Mechanic friendly Design

  • No proprietary tools or chainrings
  • All 2XR parts are interchangeable
  • Only 5mm allen wrench for install (torque wrench recommended)
    • Trailside friendly adjustment
    • Low torque specs (5-10Nm)
  • Swap crank arms + pedals between different bikes easily

Appleman 2XR Crankset Installation Instructions

Appleman 2XR Crankset Specifications

Crank Arm Length135 / 145 / 155 / 165 / 175
Q Factor *150156168183201
Spindle Diameter30
Bottom Bracket TypesBSA, ITA, PF30, BB30 T47, 3xxEVO, BBRight, + more (note: BB90/BB95 not compatible)
BB Shell Width68/8668/86 or 73/9268/86 or 73/9273/92 or 83/107100/121
Outer Bearing Width**91.591.5 or 96.591.5 or 96.596.5 or 106.5123.5
Types of BikeRoad, CX, Gravel, TrackCX, Gravel, MountainMountainMid-FatFat
Chainline (inner)404349
super boost
fat 177 rear end
Chainline (outer)47.5
recommended for 1x
recommended for 1x
super boost
fat 177 rear end
fat 197 rear end
Chainline (2x)4447536070
Distance Between Crank Arms Inside Faces123126141156174
Spider use, typical110x5 or 144x5 (track)110x5 or 104x4104x4104x4104x4
*Q-factor has a small amount of adjustability and is +0.5mm/-1.5mm. Dependent on frame/BB widths and spacers/shims
**Outer Bearing width is the width of the installed bottom bracket bearings and seals
all measurements in millimeters


Spindle / Crank lengthRoadAdventureMountainMid-FatFatSpider
*Crank weights are shown as Crank Arm + Spindle + all mounting hardware. This is how most brands display weight and do not include spider weight.

Additional information

Weight 1.25 lbs
Dimensions 9 × 9 × 2 in