AEM Tru-Time Black Adjustable Cam Gear for 1988-1997 Honda Civic, CRX, and del Sol (23-800BK)

Fits 1988-1997 Honda Civic, CRX, and del Sol models (DX, EX, LX, RT 4WD, Si, VX, S, and HF).

AEM Tru-Time Adjustable Camshaft Gears allow you to extract maximum horsepower and torque from your engine without a camshaft swap. These gears are essential for engines with milled heads, forced induction, high-compression builds, or aftermarket competition cams where precise timing is critical to performance. By advancing or retarding the cam profile in one-degree increments using true laser-etched markings, you can perfectly sync your cam timing to your specific tuning state.

Built for durability and precision, these gears are CNC-machined from 6061-T6 billet aluminum. The belt surface is hard-anodized—a process lab-tested as the hardest in the industry—to prevent premature wear on the timing belt teeth. Each gear utilizes high-strength Grade-8, six-point hex bolts with integral washer flanges to distribute load evenly and withstand repeated adjustments during dyno sessions or track-side tuning.

• CNC-machined from lightweight 6061-T6 billet aluminum
• Hard-anodized gear teeth for superior belt life and durability
• Laser-etched markings on the leading edge for accurate 1-degree adjustments
• Grade-8 six-point hex bolts with integral washer flanges for secure clamping
• Essential for optimizing power on modified or forced induction engines
• Manufacturer Part Number: 23-800BK