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PASS QUEST 130BCD 5-Bolt Hollow Round 2x Chainring Set

Smooth Shifting. Lightweight Construction. Precision CNC Engineering.

The PASS QUEST 130BCD 5-Bolt 2x Chainring Set is precision CNC-machined from high-quality aluminum alloy, featuring an optimized hollowed-out rear structure and carefully chamfered edges.

Designed as a matched double-chainring system, this set combines lightweight construction, structural rigidity, and carefully engineered shifting features to deliver smooth and reliable gear changes.

Each large and small chainring is specifically designed to work together as an original PASS QUEST combination.

1. Precision CNC-Machined Hollow Construction

Manufactured from a solid aluminum plate using precision CNC machining, the chainrings feature an optimized hollowed-out backside.

The carefully designed hollow sections and chamfered edges reduce unnecessary material while maintaining structural strength and rigidity.

This construction provides an excellent balance between weight reduction and durability.

2. Smooth and Precise Shifting – Tested Over 30 Times

Smooth shifting is essential for a reliable 2x drivetrain.

We conducted more than 30 rounds of testing, continuously refining the tooth profiles, shifting pins, and downshift ramps.

Through repeated testing and optimization, we developed a matched chainring combination designed to improve chain engagement and shifting performance.

Key design features include:

• Optimized tooth profiles for smoother chain engagement.

• Precisely positioned shifting pins to assist upshifts.

• Carefully designed downshift ramps to improve shifting transitions.

• Matched large and small chainrings for coordinated shifting performance.

3. High-Quality Aluminum Alloy & Matte Anodized Finish

The chainrings are manufactured from high-quality 7075 aluminum alloy, offering an excellent balance of strength, rigidity, and durability.

7075 aluminum alloy presents particular challenges during the anodizing process.

Through multiple rounds of product prototyping and surface-finishing improvements, we refined the anodizing process to achieve a premium matte anodized finish.

The matte surface provides a refined appearance while helping protect the aluminum against oxidation and everyday wear.

4. Lightweight Hollowed-Out and Chamfered Design

The backside features extensive hollowing and precision chamfering to reduce unnecessary weight without compromising structural integrity.

The carefully machined edges and corners create a clean, three-dimensional appearance while maintaining the rigidity required for efficient power transfer.

5. Precision Shifting Pins and Countersunk Mounting Structure

The specially shaped shifting pins are carefully positioned to help guide the chain during gear changes.

Combined with optimized tooth profiles and shifting ramps, they contribute to more consistent front shifting performance.

The countersunk mounting structure provides accurate positioning and a secure contact interface between the mounting hardware and chainrings.

Its refined design also creates a cleaner installation appearance and helps minimize unwanted noise caused by improper mounting.

6. Dedicated 130BCD 5-Bolt Compatibility

This chainring set is designed for compatible 130BCD 5-bolt cranksets.

Please confirm that your crankset supports the 130BCD 5-bolt mounting standard before ordering.

Important Compatibility Notes:

• The large and small chainrings are designed as a matched PASS QUEST original pair.

• Do not mix different brands of chainrings.

• Do not combine chainrings with different tooth combinations unless specifically confirmed compatible.

• Mixing incompatible chainrings may result in poor shifting performance or unreliable gear changes.

For the best shifting performance, always use the original PASS QUEST matched chainring set.

7. Mounting Bolts & Installation Torque

Standard chainring mounting screws are included.

Recommended Tightening Torque: 6–8 N·m

Please tighten the mounting screws evenly using an appropriate torque wrench.

Important: Excessive tightening torque may damage the screws or mounting components.

Follow the crankset manufacturer's installation requirements where applicable.

Technical Specifications

• Brand: PASS QUEST

• Product Type: 2x Double Chainring Set

• Mounting Standard: 130BCD 5-Bolt

• Material: 7075 Aluminum Alloy

• Manufacturing Process: Precision CNC Machining

• Structure: Hollowed-Out Design

• Surface Finish: Matte Anodized

• Shifting Design: Optimized Tooth Profiles, Shifting Pins and Ramps

• Testing: Over 30 Rounds of Shifting Tests

• Mounting Bolts: Included

• Recommended Tightening Torque: 6–8 N·m

Package Contents

• 1 × PASS QUEST Large Chainring

• 1 × PASS QUEST Small Chainring

• Standard Chainring Mounting Screws

Before You Order

Please confirm the following before purchasing:

• Your crankset supports 130BCD 5-bolt chainrings.

• The selected large and small chainring tooth combination is compatible with your drivetrain.

• Both chainrings are installed as the original PASS QUEST matched set.

If you are unsure about compatibility or tooth combinations, please contact PASS QUEST customer service before placing your order.