AEM Tru-Time Adjustable Cam Gears increase horsepower and torque without having to change the camshaft(s) and are must-have items for engines that are milled, forced induction, high compression and/or utilizing aftermarket competition cams. Tru-Time cam gears enable users to match cam timing with their vehicle's tuning state by advancing or retarding the cam profile(s) in one-degree increments via true laser-etched markings. Precision-cut gear teeth ensure no premature wearing of the cam gear's belt surface and AEM's anodizing on the adjustable cam gear's teeth is lab-test proven as the hardest anodizing process on the market.

AEM Tru-Time Adjustable Adjustable Cam Gears are available in a multi-spoke, five-bolt designs.

Features

Increase horsepower and torque without any cam changes and are ideal for heavily modified engines
Grade-8, six-point hex bolts stand up to repeated adjustments and feature an integral washer flange for greater load distribution
True laser-etched markings on the leading edge of the gear allow for quick, accurate adjustments
CNC-machined from 6061-T6 billet aluminum
Belt surface is hard anodized
Recommended cam gear settings included
Manufactured and assembled in the USA

Application

PART #	MAKE	YEAR	MODEL	ENGINE
23-800BK	Honda	1993-1995	Civic del Sol S	1.5L/1493ccL4 [D15B7]
23-800BK	Honda	1993-1995	Civic del Sol Si	1.6L/1590ccL4 [D16Z6]
23-800BK	Honda	1992-1995	Civic DX	1.5L/1493ccL4 [D15B7]
23-800BK	Honda	1990-1991	Civic EX	1.6L/1590ccL4 [D16A6]
23-800BK	Honda	1992-1995	Civic EX	1.6L/1590ccL4 [D16Z6]
23-800BK	Honda	1992-1995	Civic LX	1.5L/1493ccL4 [D15B7]
23-800BK	Honda	1988-1991	Civic RT 4WD	1.6L/1590ccL4 [D16A6]
23-800BK	Honda	1989-1991	Civic Si	1.6L/1590ccL4 [D16A6]
23-800BK	Honda	1992-1995	Civic Si	1.6L/1590ccL4 [D16Z6]
23-800BK	Honda	1988-1991	CRX Si	1.6L/1590ccL4 [D16A6]

Rebates

Holley October Promo 10% Off Select Parts Sale

Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

AEM Electronics 23-800BK Specifications

KEY SPECS
MFG. Part #	23-800BK
Brand	AEM Electronics
Material Type	Billet Aluminum
Finish	Black anodized

GENERAL
GTIN Code	840879020118
Sold in Quantity	Each

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