microSHIFT SB-M100A

microSHIFT Advent X Drop Bar Shift Lever (1x10-Speed) Instruction Manual

Brand: microSHIFT | Model: SB-M100A

1. Product Overview

The microSHIFT Advent X Drop Bar Shift Levers are designed for bicycles requiring drop bars and a wide gear range, specifically for 1x10-speed setups. These levers are compatible exclusively with microSHIFT ADVENT X rear derailleurs and cassettes. They provide the simplicity of a single chainring system combined with a modern gear range for various riding conditions. The shift levers are designed to be separate from the brake levers to prevent accidental braking during shifting. They feature a crisp, positive shifting action and are constructed with forged aluminum levers. The design incorporates external shifter cable routing and internal brake cable routing.

microSHIFT Advent X Drop Bar Shift Levers (1x10-Speed) for bicycles, shown from front and side views.

This image displays the microSHIFT Advent X Drop Bar Shift Levers. The left lever is shown from a front-side angle, highlighting the microSHIFT branding and '10 SPEED' text, along with the 'ADVENT X' logo on the lever body. The right lever is shown from a direct side view. Both levers are black, made of forged aluminum, and designed for drop bar bicycles.

2. Key Features

  • Crisp, positive shifting action for reliable gear changes.
  • Forged aluminum lever construction for durability.
  • External shifter cable routing and internal brake routing for a clean setup.
  • Exclusively compatible with microSHIFT ADVENT X derailleurs.
  • Designed for 1x10-speed drivetrain configurations.

3. Setup and Installation

Proper installation of your microSHIFT Advent X Drop Bar Shift Levers is crucial for optimal performance and safety. If you are unfamiliar with bicycle component installation, professional assistance from a qualified bicycle mechanic is recommended.

3.1 Required Tools

  • Hex wrenches (typically 4mm, 5mm)
  • Cable cutters
  • Cable housing cutters
  • Grease
  • Torque wrench (recommended)

3.2 Installation Steps (General Guidance)

  1. Mounting Levers: Slide the shift/brake levers onto your drop handlebars. Position them ergonomically for comfortable reach to both the brake and shift paddles. Secure the levers to the handlebars using the appropriate hex bolt, tightening to the manufacturer's specified torque.
  2. Brake Cable Routing: Route the brake cable internally through the lever body and handlebar, then externally to the brake caliper. Ensure smooth cable movement and proper housing length to avoid kinks.
  3. Shifter Cable Routing: Route the shifter cable externally from the lever body along the handlebar, then along the frame to the rear derailleur. Ensure proper housing length and minimal bends for efficient shifting.
  4. Derailleur Connection: Connect the shifter cable to your microSHIFT ADVENT X rear derailleur.
  5. Adjustments: Adjust brake cable tension for proper brake engagement and shifter cable tension for precise gear changes. Fine-tune the derailleur limits and B-tension screw according to microSHIFT's derailleur instructions.
  6. Final Check: Verify all bolts are tightened to specification. Test shifting and braking thoroughly before riding.

4. Operating Instructions

The microSHIFT Advent X Drop Bar Shift Levers are designed for intuitive operation of your 1x10-speed drivetrain.

4.1 Shifting Gears

  • Upshifting (to a smaller cog, harder gear): Use the smaller, inner paddle. A short, firm push will shift the chain to a smaller cog on the cassette.
  • Downshifting (to a larger cog, easier gear): Use the larger, outer paddle. A longer, firm push will shift the chain to a larger cog on the cassette.
  • Ensure you are pedaling lightly when shifting to allow the chain to move smoothly between cogs.

4.2 Braking

  • The brake lever operates independently from the shift levers. Pull the main lever body towards the handlebar to engage the brake.
  • Apply brake pressure smoothly and progressively.
  • Note that for 1x10 setups, only the left lever includes a brake function.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your shift levers.

  • Cleaning: Keep the levers and surrounding areas clean from dirt and grime. Use a mild soap and water solution, then rinse and dry thoroughly. Avoid high-pressure washing directly on the levers.
  • Cable Inspection: Periodically inspect shifter and brake cables for fraying, corrosion, or kinks. Replace cables and housing as needed to maintain smooth operation.
  • Lubrication: Apply a small amount of bicycle-specific lubricant to the pivot points of the levers and where cables enter housing. Avoid over-lubrication, which can attract dirt.
  • Bolt Torque: Periodically check the mounting bolts for the levers to ensure they are tightened to the correct torque specifications.
  • Compatibility: Remember these levers are only compatible with microSHIFT ADVENT X derailleurs. Using them with other systems may cause damage or poor performance.

6. Troubleshooting

If you experience issues with your microSHIFT Advent X Drop Bar Shift Levers, consider the following common troubleshooting steps:

  • Poor Shifting Performance:
    • Check shifter cable tension. Adjust the barrel adjuster on the derailleur or shifter to fine-tune tension.
    • Inspect shifter cable and housing for friction, kinks, or damage. Replace if necessary.
    • Verify derailleur hanger alignment. A bent hanger can significantly impact shifting.
    • Ensure the derailleur limit screws are correctly set.
  • Brake Lever Feels Spongy or Ineffective:
    • Check brake cable tension. Tighten the cable at the caliper or lever if there is too much slack.
    • Inspect brake cable and housing for damage or excessive friction. Replace if necessary.
    • Ensure brake pads are correctly aligned and not worn out.
  • Lever Not Returning to Position:
    • Clean and lubricate the lever pivots.
    • Check for any obstructions or debris preventing full lever return.

For persistent issues, consult a professional bicycle mechanic or contact microSHIFT customer support.

7. Technical Specifications

SpecificationDetail
BrandmicroSHIFT
Model NumberSB-M100A
Drivetrain Speeds10-Speed
Front Derailleur Compatibility1x (Single Chainring)
Rear Derailleur CompatibilitymicroSHIFT ADVENT X only
MaterialForged Aluminum
ColorBlack
Shifter Cable RoutingExternal
Brake Cable RoutingInternal
Item Weight841 Grams (1.85 pounds)
Included ComponentsBrake/Shift Lever, Drop Bar Pair

8. Warranty and Support

For information regarding product warranty, please refer to the official microSHIFT website or the warranty documentation included with your purchase. For technical support, spare parts, or further assistance, please contact microSHIFT customer service directly through their official channels.

Always ensure you are using genuine microSHIFT replacement parts for optimal performance and to maintain warranty validity.

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