Product Title

BIGROCK 7075 Aluminum Chainring – Shimano SRAM 110BCD & 3-Bolt CNC Road Bike Chainring

Short Description

The new BIGROCK chainring series is designed for riders who demand lightweight performance, precise power transfer, and clean drivetrain aesthetics. CNC-machined from forged 7075 aluminum alloy, these chainrings are engineered for modern Shimano and SRAM cranksets with optimized stiffness, shifting performance, and durability.

Available for 110BCD and SRAM 3-bolt crank systems.

Product Features

Premium 7075 Aluminum Alloy

Manufactured from forged aerospace-grade 7075 aluminum alloy for:

• Excellent stiffness-to-weight ratio
• High drivetrain efficiency
• Long-term durability
• Stable high-power pedaling performance

Designed for road racing, climbing, and performance riding.

Full CNC Precision Machining

Each chainring is fully CNC-machined for:

• Accurate tooth profiling
• Precise chain engagement
• Smooth shifting performance
• Lightweight construction

Optimized for modern electronic and mechanical drivetrain systems.

Optimized Drivetrain Efficiency

BIGROCK spent years refining:

• Chain retention performance
• Pedaling stiffness
• Structural durability
• Weight balance
• Riding efficiency

The result is a high-performance chainring built for serious cyclists.

Shimano & SRAM Compatibility

Compatible with:

• Shimano 110BCD cranksets
• SRAM 3-bolt cranksets
• Modern road bike drivetrain systems

Suitable for:

• Shimano road groupsets
• SRAM road cranksets
• Lightweight custom builds

Multiple Size Options

SRAM 3-Bolt Chainrings

• 42T
• 44T
• 46T
• 48T

110BCD Single Chainrings

• 42T
• 44T
• 46T
• 48T

110BCD Double Chainrings

• 50-34T
• 52-36T
• 54-40T
• 56-42T

Race-Oriented Design

The dedicated structural design balances:

• Lightweight performance
• Stiffness
• Aerodynamics
• Drivetrain efficiency

Perfect for modern aero road bikes and lightweight race builds.

Specifications

• Brand: BIGROCK
• Material: Forged 7075 Aluminum Alloy
• Process: Full CNC Machining
• Compatibility: Shimano / SRAM
• Mount Type: 110BCD / SRAM 3-Bolt
• Application: Road Bike

Package Includes

• Chainring ×1 (Selected Specification)

Why Riders Choose BIGROCK

BIGROCK developed this chainring series as the final core drivetrain component for complete in-house crank systems.

Through extensive testing across carbon fiber, titanium, and aerospace-grade aluminum structures, BIGROCK optimized stiffness, durability, and real-world riding efficiency to create a chainring system built for performance-focused riders.

Compatibility Check: Due to the complexity of original equipment manufacturer (OEM) parts' models and batches, there may be instances where this product is incompatible.

Upon receiving this product, please compare it with the OEM specifications to ensure compatibility before installation.

Torque Specifications: Install this product strictly according to the torque values specified in the OEM parts manual.Installation Issues: If you encounter any discrepancies with the OEM specifications or face difficulties at the initial stage of installation, stop immediately and contact customer service for assistance with returns or exchanges.

No Forced Installation: Do not force installation under any circumstances.Liability: Any damages resulting from forced installation or unauthorized modifications of this product (or its components) will be the sole responsibility of the buyer.

All products are photographed to accurately represent the colors you will see upon receipt.

Due to differences in lighting, angles, or screen settings, slight color variations may occur.

The actual product should be considered the standard.For "colored" and "blue" products, the coloring process may result in uneven color distribution, making each product unique.