PBI Sprockets .750 Inch Offset 33 Spline 530 Transmission Sprocket for Harley Big Twin Sportster Buell

PBI Sprockets .750 Inch Offset 33 Spline 530 Transmission Sprocket for Harley Big Twin Sportster Buell

When your drivetrain demands precision, PBI Sprockets delivers the kind of reliability that holds up mile after mile. Riders who upgrade to this transmission sprocket consistently notice smoother chain engagement and the confidence that comes from knowing their drivetrain components are built to last.

Key Features

• Available in 21, 22, 23, and 24-tooth configurations to dial in your preferred final drive ratio
• CNC-machined to exacting tolerances for consistent fit and reliable power transfer
• Case hardened for superior wear resistance under sustained high-load conditions
• Electroless nickel plated for corrosion resistance and enhanced lubricity across the chain interface
• Drilled and tapped to accept the late-model lock plate without modification
• Compatible with .530 pitch chain systems

Technical Specifications

• Tooth Count: 21, 22, 23, or 24 (select at time of purchase)
• Chain Pitch: .530
• Spline Count: 33
• Offset: .750 inches (measured from the face that rests against the main shaft bearing to the inside of the teeth)
• Material: 8620 chromoly steel, case hardened
• Finish: Electroless nickel plating
• Sprocket Type: Transmission (countershaft)

Fitment Notes

• 1986-1993 Big Twin models require an additional spacer, seal, and O-ring for proper installation — consult your factory service manual for the correct components before proceeding
• Offset measurement is taken from the face that rests against the main shaft bearing to the inside of the teeth
• Select tooth count based on your desired final drive ratio before ordering — gearing changes affect both acceleration and top speed characteristics
• Review the Fitment tab for the complete year and model breakdown
• 86-93 Big Twin models must use OEM #33344-94 (SPACER), OEM #12067A (SEAL), and OEM #11165 (O-RING)