AEM Tru-Time Adjustable Cam Gears increase horsepower and torque without swapping camshafts, making them a common upgrade for milled, forced-induction, high-compression, or aftermarket-cam Honda engines. True laser-etched markings on the gear's leading edge let the cam profile be advanced or retarded in one-degree increments to match the engine's tuning state. Precision-cut gear teeth protect the belt surface from premature wear, and AEM's hard-anodized finish is lab-tested as one of the hardest anodizing processes on the market.
WarrantyInstallation Instructions
Installation Instructions
Specifications:
- Grade-8 six-point hex bolts with integral washer flange for load distribution
- True laser-etched markings for 1-degree adjustment increments
- CNC-machined from 6061-T6 billet aluminum
- Hard-anodized belt surface
- Recommended cam gear settings included
- Part Number: 23-800BK
Vehicle Applications
- 1988 Honda Civic DX
- 1989 Honda Civic DX
- 1990 Honda Civic DX
- 1991 Honda Civic DX
- 1992 Honda Civic DX
- 1993 Honda Civic DX
- 1994 Honda Civic DX
- 1995 Honda Civic DX
- 1990 Honda Civic EX
- 1991 Honda Civic EX
- 1992 Honda Civic EX
- 1993 Honda Civic EX
- 1994 Honda Civic EX
- 1995 Honda Civic EX
- 1988 Honda Civic LX
- 1989 Honda Civic LX
- 1990 Honda Civic LX
- 1991 Honda Civic LX
- 1992 Honda Civic LX
- 1993 Honda Civic LX
- 1994 Honda Civic LX
- 1995 Honda Civic LX
- 1988 Honda Civic RT 4WD
- 1989 Honda Civic RT 4WD
- 1990 Honda Civic RT 4WD
- 1991 Honda Civic RT 4WD
- 1989 Honda Civic Si
- 1990 Honda Civic Si
- 1991 Honda Civic Si
- 1992 Honda Civic Si
- 1993 Honda Civic Si
- 1994 Honda Civic Si
- 1995 Honda Civic Si
- 1992 Honda Civic VX
- 1993 Honda Civic VX
- 1994 Honda Civic VX
- 1995 Honda Civic VX
- 1993 Honda Civic del Sol S
- 1994 Honda Civic del Sol S
- 1995 Honda Civic del Sol S
- 1996 Honda Civic del Sol S
- 1997 Honda Civic del Sol S
- 1993 Honda Civic del Sol Si
- 1994 Honda Civic del Sol Si
- 1995 Honda Civic del Sol Si
- 1996 Honda Civic del Sol Si
- 1997 Honda Civic del Sol Si
- 1988 Honda CRX HF
- 1989 Honda CRX HF
- 1990 Honda CRX HF
- 1991 Honda CRX HF
- 1988 Honda CRX Si
- 1989 Honda CRX Si
- 1990 Honda CRX Si
- 1991 Honda CRX Si
FAQ
What does the AEM Tru-Time cam gear do?
It lets the cam timing be advanced or retarded in one-degree increments via laser-etched markings, so horsepower and torque can be optimized without changing camshafts.
What is the gear made from?
It is CNC-machined from 6061-T6 billet aluminum with a hard-anodized belt surface and Grade-8 six-point hex adjustment bolts.
Which vehicles does part 23-800BK fit?
It fits 1988-1995 Honda Civic, 1993-1997 Honda Civic del Sol, and 1988-1991 Honda CRX; see the Vehicle Applications section for exact trim coverage.