🚴 RIRO RACER R9 Road Bike Crankset

Lightweight Aluminum Alloy Double Chainring System

✨ Key Features

⚡ Premium Construction

Lightweight aluminum alloy crankset with hollow design for optimal strength-to-weight ratio. Available in 50-34T or 53-39T configurations.

🔧 Universal Compatibility

Works with SHIMANO, SRAM, LTWOO, SENSAH drivetrains. 110BCD standard for easy chainring replacement.

📏 170mm Crank Arms

Standard 170mm arm length with 24mm chromoly steel spindle. Q-Factor: 152mm, Chainline: 44.5mm for precise shifting.

⚙️ Multi-Speed Ready

Compatible with 2x12s, 2x11s, and 2x10s drivetrain configurations. BB-BSA-24R or BB86-24R bottom bracket compatible.

📊 Specifications

BrandRIRO
ModelRACER R9
MaterialAluminum Alloy
Crank Arm Length170mm
BCD (Bolt Circle Diameter)110mm
Chainring Options50-34T or 53-39T
Spindle Diameter24mm (CR-MO Steel)
Speed Compatibility2x12s / 2x11s / 2x10s
Q-FactorApproximately 152mm
Chain LineApproximately 44.5mm
Weight (50-34T)805g (without BB), 920g (with BB)
Weight (53-39T)890g (without BB), 990g (with BB)
Bottom Bracket TypeBB-BSA-24R / BB86-24R
Drivetrain CompatibilitySHIMANO, SRAM, LTWOO, SENSAH

📦 Package Options

Choose from:

• 50-34T Without Bottom Bracket
• 50-34T With Bottom Bracket
• 53-39T Without Bottom Bracket
• 53-39T With Bottom Bracket

Note: Measurements are taken manually and may have slight variations (±2mm).

🖼️ Product Images

RIRO RACER R9 CranksetCrankset Detail ViewChainring Close-upCrank Arm DesignInstallation View

❓ What chainring configurations are available?

Two options: 50-34T (compact racing) or 53-39T (standard racing). Both use 110BCD standard for easy replacement.

❓ Is the bottom bracket included?

You can choose options with or without BB. Compatible with BB-BSA-24R and BB86-24R bottom brackets.

❓ What drivetrains does this work with?

Compatible with SHIMANO, SRAM, LTWOO, and SENSAH 2x12s, 2x11s, and 2x10s systems.

❓ What is the weight?

50-34T: 805g (without BB) or 920g (with BB). 53-39T: 890g (without BB) or 990g (with BB).