Strummer DMCA-ULA1 Crank
Direct Mount Alloy Crank – Modular, Lightweight, and Flexible
Strummer DMCA-ULA1 is an alloy crank with a Shimano Compatible Direct Mount system designed for riders who want a lightweight, precise crank that is easy to adjust to their setup needs.
This crank uses Aluminum Alloy material with a CNC machined process to produce a precise shape, lightweight, and neat appearance. The anodized aluminum finishing provides a clean look while also helping to enhance surface durability.
The main advantage of this crank lies in the modular system concept. The crank arm, spindle, and chainring are separate components, allowing users to determine the setup combination according to their needs, whether for a single chainring, double chainring, or using a BCD 104 chainring with an additional adapter.
Key Advantages
- modular crank system
- Crank arm, spindle, and chainring are separate
- Compatible with Shimano Compatible Direct Mount Chainring
- Can be used for single chainring or double chainring setups
- Can use chainring BCD 104 with an additional adapter
- Process CNC machined for precise results
- Material Aluminum Alloy
- Finishing anodized aluminum
- Lightweight, ±415 grams for the left and right crank arms
- Easier to upgrade and more repairable because the main components can be replaced separately
Modular & Repairable Concept
The Strummer DMCA-ULA1 is designed with a modular concept, so users are not locked into a single crankset configuration.
With this system, users can choose the crank length, spindle, and chainring according to their needs. If currently using a single chainring, users still have the option to switch to a double chainring in the future without having to buy a new crank set.
The separate component system also makes this crank more repairable. If a specific component needs to be replaced, users do not have to replace the entire crankset.
Pilihan Panjang Crank
| Crank Length Options | Crank Length |
|---|---|
| Description | 165 mm |
| Suitable for riders who want a higher cadence or safer pedal clearance | 167.5 mm |
| Middle option between 165 mm and 170 mm | 170 mm |
General size for road, gravel, and MTB
| Specifications | Details |
|---|---|
| Crank Only Weight | ±415 grams |
| Product Weight | Left and right crank arms |
| Note | The weight difference between crank lengths is not significant |
Package Contents
| Components | Quantity |
|---|---|
| Right crank arm | 1 pcs |
| Left crank arm | 1 pcs |
| Spacer Ø29 × 0.5 mm | 2 pcs |
| Spacer Ø29 × 1 mm | 1 pcs |
| Spacer Ø29 × 2 mm | 1 pcs |
| Spring Washer | 1 pcs |
| Plastic Lock Washer | 2 pcs |
| Ø29 mm Spindle Lock | 1 pcs |
Note: the image of the chainwheel is for illustration only. The purchase includes only the left-right crank arm and small parts listed in the package contents. Chainring, spindle, bottom bracket, and adapter are sold separately unless specifically mentioned.
Chainring Compatibility
The Strummer DMCA-ULA1 crank is compatible with the Shimano Compatible Direct Mount System chainring.
Examples of Suitable Chainrings
Strummer DMCR-SHM-ULA1 Ultralight AL-7075 Chainring
Shimano Compatible Direct Mount
| Size | SKU |
|---|---|
| 32T | CRING-00050BKCNC |
| 34T | CRING-00051BKCNC |
| 40T | CRING-00052BKCNC |
| 42T | CRING-00053BKCNC |
| 52/36T | CRING-00048BKCNC |
| 53/39T | CRING-00049BKCNC |
Spindle Compatibility
This crank is suitable for use with Strummer spindles with a diameter of 29 mm.
| Product | Size | SKU |
|---|---|---|
| Strummer DMSP-SHM29-ULA Road Ultralight Spindle | 125 × 29 mm | AS-00034SL |
| Strummer DMSP-SHM29-ULA MTB Ultralight Spindle | 129 × 29 mm | AS-00033SL |
Note: spindle choice needs to be adjusted according to chainline requirements, bottom bracket width, and the type of frame used.
Adapter Compatibility
If you want to use a chainring with BCD 104, this crank can be paired with the following adapter:
| Product | SKU |
|---|---|
| Strummer ADTCR-104-SHM Chainring Adapter for Shimano Direct Mount | ADT-00079BK |
This adapter allows users to use a chainring with the BCD 104 standard on the Strummer DMCA-ULA1 crank.
Product Specifications
| Specifications | Details |
|---|---|
| Model | Strummer DMCA-ULA1 |
| Type | Crank Arm Direct Mount |
| Material | Aluminum Alloy |
| Process | CNC Machined |
| Finishing | Anodized Aluminum |
| Chainring System | Shimano Compatible Direct Mount |
| Crank System | Modular |
| Length Options | 165 mm, 167.5 mm, 170 mm |
| Spindle Compatibility | Ø29 mm |
| Crank Only Weight | ±415 grams |
| Chainring Compatibility | Single / Double Chainring |
| Adapter Compatibility | BCD 104 via adapter ADTCR-104-SHM (Sold Separately) |
Installation Notes
Ensure the combination of crank, spindle, bottom bracket, spacer, and chainring is compatible with the frame standards used. Use grease on the appropriate contact areas and avoid over-torquing during installation.
For best results, installation is recommended to be done by an experienced mechanic,
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Pay Attention to the Details
We obsessively focus on the details. Improving by the millimeter. Adding the stiffness of our hubs by widening the flange of our hubs, thus increasing wheelset stability and strength.
