Cranks

Machined from billet aluminum, the Tandems East crankarm shorteners are lighter than their competitors and very effective. The most obvious application is for children, but they are great for shorter adults or anyone that has hip, joint or knee problems that prevent full range-of-motion with a standard length crank. Threads into crank arms and provides four pedal positions shortened by 24, 41, 59 and 76mm.

Product Notes:

• Standard fits on crankarms up to 29mm wide
• Weight: 266 grams for the Standard pair

• Wide fits on crankarms up to 38mm wide
• Weight: 298 grams for the Wide pair
• Fits 9/16 pedal thread

Replacement crankarms for Schlumpf Square taper bottom brackets.

Product Notes:

• Profile: Straight
• Sizes: 155mm or 170mm
• Sold As a Pair
• Silver
• May also work on Bafang square taper motors

Reduce knee strain and increase cadence. Bolts into crankarm and pinches arm with adjustable cams.

Product Notes:

• Shortens crankarms by 24, 41, 58 and 75mm.
• Adjustable cams to fit a variety of crankarm widths from 23 to 42mm.
• Compatible with 9/16" pedal threads.
• Pedal wrench not included.
• This listing is for individual shorteners, the pair can be found here.
• Requires a 6mm allen wrench and a tube of Loctite 242 to install the shorteners on your crank arms.  These items are included.

Replacement triple crank arm set.  7/8/9/10 speed compatible.  Great for Junior road or recumbent applications.  Forged AL6061-T6 alloy construction.  Includes chainring spacers for 7/8/9 speed
46.5mm chainline.  Bottom bracket not included.

Specifications

• Length / Teeth: 145mm
• Spindle Type: Use a 113mm Square Taper JIS Bottom Bracket
• Color: Silver
• Bolt Circle Diameter (BCD): 74/130mm - 5 Bolt
• Weight: 495g
• Speed: 3x
• Spacing: 46.5mm

Replacements for lost or damaged shift buttons (each). 

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

Hex-type steel crank fixing bolt set with integrated plastic dust cap

Replacements for lost or damaged shift buttons (pair). Includes installation tool.

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

These single speed short cranks work great for shorter riders using an 8 speed internal hub and a single chainring up front, like on a TerraTrike Rover. 32t ring and 152mm arms. Silver.

Cone ring for Schlumpf Drive Units. One ring is needed between frame and drive unit excect on Mountain Drive units with torque arm. Mis-match cone ring material and frame material for better friction and less chance of gear unit slipping in frame.

The aluminum cone is great for steel and titanium frames.

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

Cone ring for Schlumpf Drive Units. One ring is needed between frame and drive unit excect on Mountain Drive units with torque arm. Mis-match cone ring material and frame material for better friction and less chance of gear unit slipping in frame.

The steel cones are great for aluminum frames.

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

The Sugino XD-600 is a quality 152mm crankset the you have been looking for. Silver arms with alloy ramped SuperShift alloy rings.  Shorter crankarms are something to consider having installed on your bike or trike if you have knee or hip range-of-motion problems. They are also great for smaller riders with shorter legs as well.  Sugino XD600 Triple Cranksets are 8-speed and 9-speed compatible.

Product Notes:

• Uses five 9mm inner bolts, one hidden behind crankarm
• Silver arms with alloy ramped SuperShift alloy rings
• Includes pick-up pins and features special tooth profiles for shifting performance and less chainsuck
• Recommended 113mm Bottom Bracket Spindle length for Mountain use
• Recommended 110mm Bottom Bracket Spindle length for Road use
• Number of Chainrings: Triple
• Chainline/Hub Compatibility: 135/142 MTB Hubs
• Spindle Interface Type: Square Taper JIS
• Chainring BCD: 110
• Color: Silver
• Crank Length (mm): 152
• Crank Intended Use: Road or Mountain
• Pedal Spindle: 9/16"
• Rings: 24/36/50t
• Drivetrain Speeds: 8 & 9 Speed
• Weight: 690 g
• Bottom Bracket Included: No

Schlumpf Circlip - one of those small parts that can go missing when performing maintenance.

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

Schlumpf Crank Axle Bolt

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

The ingenious Schulmpf cranksets utilize a heel-activated, two speed planetary gearing system in the bottom bracket and spider to achieve a high and low range without multiple chainrings, front derailleur, or shifter. Schlumpf cranksets are available as a Mountain Drive, Speed Drive, or High Speed Drive. The Mountain Drive uses a direct drive 1:1 ratio, and a low gear 2.5:1 ratio. The Speed Drive uses a direct drive 1:1 ratio, and an overdrive 1:1.65 ratio. The High Speed Drive has an integrated 27T ring with a 1:1 ratio and a 1:2.5 overdrive. All fit standard 68mm bottom bracket shells and all are also suitable for tandems. The efficiency of the planetary gears is 95 - 97%.

Prior to installation, your bike's bottom bracket must be chamfered at 45° on both sides.  Chamfering will not affect normal bottom bracket installation in the future.  Trike booms can be shipped to the Hostel Shoppe for chamfering (nominal fee of $60 plus return shipping).  Please call the Hostel Shoppe for chamfering options at (800-233-4340).

The Mountain Drive comes complete with bottom bracket, spider (130mm BCD), crankarms (black 170mm), crankarm bolts, shift buttons, and tube of lubricant. Chainrings not included.  Also includes a steel cone for aluminum bottom bracket shells, and an aluminum cone for steel bottom bracket shells.

For information on measuring your chainring bolt circle diameter (BCD), click on the link to our help page Here.  For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

Attach to your Schlumpf crankarms to make shifting easier by extending the button along the entire length of the crankarm. Lightwieght aluminum. Works on Schlumpf 170mm crankarms with flat profile only. The EZ-shift levers do not work with other Schlumpf crankarms with the curved profile (172.5, 165, 160 & 152mm). Also, the EZ-Shift levers do not work with aftermarket crankarms. Pair.

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

The ingenious Schulmpf cranksets utilize a heel-activated, two speed planetary gearing system in the bottom bracket and spider to achieve a high and low range without multiple chainrings, front derailleur or shifter. Schlumpf cranksets are available as a Mountain Drive, Speed Drive, or High Speed Drive. The Mountain Drive uses a direct drive 1:1 ratio, and a low gear 2.5:1 ratio. The Speed Drive uses a direct drive 1:1 ratio, and an overdrive 1:1.65 ratio. The High Speed Drive has an integrated 27T ring with a 1:1 ratio and a 1:2.5 overdrive. All fit standard 68mm bottom bracket shells and all are suitable for tandems. The efficiency of the planetary gears is 95 - 97%.

The Torque Arm Mountain Drive will only work with single or double chainrings but it eliminates the need to chamfer the bottom bracket. Includes bottom bracket and spider, crankarms (170mm), crankarm bolts and shift buttons. Chainrings not included.

The Mountain Drive comes complete with bottom bracket, spider (130mm BCD), crankarms (black 170mm), crankarm bolts, shift buttons, and tube of lubricant. Chainrings not included.

For information on measuring your chainring bolt circle diameter (BCD), click on the link to our help page Here.  For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

The ingenious Schulmpf cranksets utilize a heel-activated, two speed planetary gearing system in the bottom bracket and spider to achieve a high and low range without multiple chainrings, front derailleur, or shifter. Schlumpf cranksets are available as a Mountain Drive, Speed Drive, or High Speed Drive. The Mountain Drive uses a direct drive 1:1 ratio, and a low gear 2.5:1 ratio. The Speed Drive uses a direct drive 1:1 ratio, and an overdrive 1:1.65 ratio. The High Speed Drive has an integrated 27T ring with a 1:1 ratio and a 1:2.5 overdrive. All fit standard 68mm bottom bracket shells and all are also suitable for tandems. The efficiency of the planetary gears is 95 - 97%.

Prior to installation, your bike's bottom bracket must be chamfered at 45° on both sides.  Chamfering will not affect normal bottom bracket installation in the future.  Trike booms can be shipped to the Hostel Shoppe for chamfering (nominal fee of $60 plus return shipping).  Please call the Hostel Shoppe for chamfering options at (800-233-4340).

The Mountain Drive comes complete with bottom bracket, spider (130mm BCD), 38t adapter, crankarms (black 170mm), crankarm bolts, shift buttons, and tube of lubricant. 38t chainrings is included.  Also includes a steel cone for aluminum bottom bracket shells, and an aluminum cone for steel bottom bracket shells.

For information on measuring your chainring bolt circle diameter (BCD), click on the link to our help page Here.  For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

Schlumpf O-ring 70 NBR 601, 72mm x 2.5mm.

For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

The Shimano STEPS FC-E8000 eBike crankarm set is designed for use with the Shimano STEPS E8000 eBike drive units.

The ingenious Schulmpf cranksets utilize a heel-activated, two speed planetary gearing system in the bottom bracket and spider to achieve a high and low range without multiple chainrings, front derailleur, or shifter. Schlumpf cranksets are available as a Mountain Drive, Speed Drive, or High Speed Drive. The Mountain Drive uses a direct drive 1:1 ratio, and a low gear 2.5:1 ratio. The Speed Drive uses a direct drive 1:1 ratio, and an overdrive 1:1.65 ratio. The High Speed Drive has an integrated 27T ring with a 1:1 ratio and a 1:2.5 overdrive. All fit standard 68mm bottom bracket shells and all are also suitable for tandems. The efficiency of the planetary gears is 95 - 97%.

Prior to installation, your bike's bottom bracket must be chamfered at 45° on both sides.  Chamfering will not affect normal bottom bracket installation in the future.  Trike booms can be shipped to the Hostel Shoppe for chamfering (nominal fee of $60 plus return shipping).  Please call the Hostel Shoppe for chamfering options at (800-233-4340).

The Speed Drive comes complete with bottom bracket, spider (110mm BCD), crankarms (black 170mm), crankarm bolts, shift buttons, and tube of lubricant. Chainrings not included.  Also includes a steel cone for aluminum bottom bracket shells, and an aluminum cone for steel bottom bracket shells.

For information on measuring your chainring bolt circle diameter (BCD), click on the link to our help page Here.  For Schlumpf Drive installation documents and manuals click on the Schlumpf Drive resource page Here.  More information can also be found on the Schlump Drive FAQ page Here.

Crankarms for HP Velotechnik Shimano Steps 8000 trikes

• 155mm

150mm short crankarm for Hase Kettwiesel with Shimano Steps 6100 e-assist.

Left crankarm only.

150mm short crankarm for Hase Kettwiesel with Shimano Steps 6100 e-assist.

Left crankarm only.

Short cranks are for shorter riders, this will work pefrect on a Trigo Shimano Steps 5000.

Short cranks are for shorter riders, this will work pefrect on a Trigo Shimano Steps 5000.

Shimano Crankarms for Shimano STEPS E8000 Drive. FC-E8000

• 150mm
• With Fixing Nuts
• No Spyder needed