Fits select 1990-2006 Mitsubishi Lancer Evolution, Eclipse, Galant VR-4, Eagle Talon, and Plymouth Laser models equipped with the 4G63 engine.

Brian Crower adjustable cam gears (BC8810) are engineered for the precise timing control required to maximize the power potential of the 4G63 platform. These gears allow tuners to advance or retard camshaft timing, making it possible to dial in the power band for specific modifications or to compensate for changes in timing geometry caused by head or block resurfacing. Built for durability and accuracy, they are a critical component for anyone installing high-lift aftermarket camshafts.

• CNC machined construction for precise fitment and long-term reliability
• Enables fine-tuning of valve timing to optimize torque and horsepower
• Essential for correctly degreeing aftermarket camshafts
• Application-specific for 4G63 and EVO VIII engines
• Manufacturer Part Number: BC8810

Maximize the power delivery of your Honda B-Series engine with this pair of Brian Crower adjustable cam gears. Designed for precise valve timing, these gears allow tuners to dial in intake and exhaust events to optimize horsepower and torque based on specific camshaft profiles and engine builds.

• CNC machined for exact tolerances and weight reduction
• Black anodized finish for superior corrosion resistance and durability
• Laser-etched timing marks for accurate adjustment increments
• Compatible with all Honda B-Series engines (B16, B17, B18, B20)
• Includes two (2) cam gears (pair)
• Manufacturer Part Number: BC8801B

Fits 1990-2001 Acura Integra, Honda Civic Si, Honda Civic del Sol VTEC, and Honda CR-V with B-Series engines.

Brian Crower adjustable cam gears are essential for fine-tuning your engine's powerband and ensuring your camshafts are properly degreed. Whether you are running aftermarket cams or a milled cylinder head, these gears (part number BC8801) provide the adjustment range necessary to compensate for timing changes and optimize overlap for maximum horsepower and torque.

Each gear is precision-machined for exact fitment on the B-Series crankshaft-to-camshaft timing interface. The adjustable outer ring features a clear, laser-etched vernier scale for accurate timing advance or retard, secured by high-grade locking bolts to prevent slipping under high-RPM operation.

• Manufacturer Part Number: BC8801
• Quantity: Pair (Includes 2 cam gears)
• Engine Compatibility: Honda B-Series (B16, B17, B18, B20)
• Adjustment: Laser-etched scale for precise timing degreeing
• Fitment: Replaces factory non-adjustable cam pulleys

Fits select 1986-2000 Acura Integra and Honda Civic, Civic del Sol, and CRX models (1.5L / 1.6L).

The BLOX Racing Adjustable Cam Gear (BXPT-10101) is a critical component for enthusiasts looking to extract maximum performance from their SOHC D-Series engines. These gears allow for precise valve timing adjustments, which is essential when installing aftermarket camshafts or correcting timing changes caused by cylinder head milling or engine block decking.

• Enables fine-tuned ignition and valve timing for improved horsepower and torque
• Direct replacement for factory cam gears on 1.5L and 1.6L SOHC engines
• Manufacturer Part Number: BXPT-10101
• Compatible with both VTEC and non-VTEC D-Series cylinder heads

Vehicle Fitment:

• 1986-1989 Acura Integra (LS, RS, LS Special Edition)
• 1988-2000 Honda Civic (CX, DX, EX, GX, HX, LX, RT 4WD, Si, VX, Value Package)
• 1993-1997 Honda Civic del Sol (S, Si)
• 1988-1991 Honda CRX (Base, DX, HF, Si)

Fine-tune your engine's powerband with BLOX Racing adjustable cam gears. Designed for the 1990-2001 Acura and Honda B-Series and H23A DOHC engines, these gears allow tuners to optimize valve timing to maximize horsepower and torque, especially after installing aftermarket camshafts or milling the cylinder head. Precision-indexed timing marks allow for accurate adjustments to cam degrees, ensuring your valvetrain is perfectly synced for peak performance.

• Manufacturer Part Number: BXPT-10100
• Enables precise adjustment of camshaft timing
• Essential for maximizing gains from aftermarket camshafts
• Durable construction designed for high-RPM applications
• Laser-etched timing marks for clear visibility during tuning

Vehicle Fitment:

• 1990-2001 Acura Integra (GS, GS-R, LS, RS, Special Edition, Type R)
• 1999-2000 Honda Civic Si
• 1994-1997 Honda Civic del Sol VTEC
• 1997-2001 Honda CR-V (EX, LX, SE)
• 1992-1996 Honda Prelude (Si, SE, Si 4WS)

Fits 2005-2006 Mitsubishi Lancer Evolution models, including MR, RS, and SE variants.

The AEM Tru-Time Adjustable Cam Gear (MPN: 23-831BK) provides the precision needed to optimize power delivery on heavily modified 4G63 engines. Whether your engine is milled, features high-compression pistons, or utilizes forced induction, these gears allow you to advance or retard cam timing in one-degree increments to match your specific tuning state. Precision-cut gear teeth prevent premature wear on the timing belt, while the hard-anodized surface ensures long-term durability under high-stress racing conditions.

• CNC-machined from 6061-T6 billet aluminum for high strength and reduced rotational mass
• True laser-etched markings on the leading edge for accurate timing adjustments
• Hard-anodized belt surface lab-tested for superior wear resistance
• Grade-8, six-point hex bolts with integral washer flanges for secure, repeatable adjustments
• Enables horsepower and torque gains without necessarily changing camshaft profiles
• Manufacturer Part Number: 23-831BK

Fits 1989-1999 Mitsubishi Eclipse, Galant, Eagle Talon, and Plymouth Laser equipped with the 4G63/T engine.

AEM Tru-Time adjustable camshaft gears are a critical tuning component for high-performance 4G63 engines, particularly those featuring milled heads, forced induction, high compression, or aggressive aftermarket competition cams. These gears allow for precise synchronization of cam timing to compensate for changes in deck height or to optimize the power band by advancing or retarding cam profiles in one-degree increments.

CNC-machined from 6061-T6 billet aluminum, these gears provide maximum durability without unnecessary weight. The belt surface is treated with a lab-proven hard-anodizing process to prevent premature wear. To ensure the settings stay locked during high-RPM operation, AEM utilizes Grade-8 six-point hex bolts with integral washer flanges for superior load distribution and repeat adjustability.

• CNC-machined from 6061-T6 billet aluminum for weight reduction and strength
• True laser-etched markings on the leading edge for accurate 1-degree adjustments
• Hard-anodized belt surface significantly extends gear life
• Grade-8 hex bolts with integral washers for secure clamping and durability
• Allows for horsepower and torque gains without changing camshafts
• Manufacturer Part Number: 23-830BK

Fits 1996-2000 Honda Civic (CX, DX, EX, HX, LX, Value Package) and 1996-1997 Honda Civic del Sol (S, Si) models equipped with D16 series engines.

The AEM Tru-Time Adjustable Camshaft Gear is a critical tuning component for optimizing engine performance. It allows you to increase horsepower and torque without a full camshaft replacement, making it essential for D16 engines modified with milled heads, forced induction, high compression, or aggressive aftermarket camshafts. These gears enable precise timing adjustments, allowing you to advance or retard the cam profile in one-degree increments via clear, laser-etched markings on the leading edge.

Built for the rigors of high-performance use, the gear is CNC-machined from 6061-T6 billet aluminum. The teeth are treated with a hard-anodizing process to prevent premature wear on the timing belt surface. To ensure the timing remains locked during high-RPM operation, AEM utilizes Grade-8, six-point hex bolts featuring integral washer flanges for superior load distribution and repeatable adjustments.

• CNC-machined from 6061-T6 billet aluminum for strength and weight savings
• Hard-anodized belt surface for maximum durability against belt wear
• Laser-etched markings allow for accurate 1-degree timing adjustments
• High-strength Grade-8 hex bolts with integral washers for secure clamping
• Ideal for engines with forced induction or competition camshafts
• Manufacturer Part Number: 23-804BK

Fits select 1988-2006 Acura, Honda, Mitsubishi, Chrysler, Dodge, Eagle, and Plymouth models.

The AEM Tru-Time Adjustable Camshaft Gear (23-802BK) provides the precision needed to optimize engine performance across a wide range of modifications. Whether your engine is milled, turbocharged, or running high-compression pistons with aftermarket cams, these gears allow you to advance or retard cam timing in one-degree increments to find the ideal power band. Each gear features true laser-etched markings on the leading edge for accurate, repeatable adjustments.

Constructed for professional-grade durability, the gear is CNC-machined from 6061-T6 billet aluminum. The belt surface is hard-anodized to prevent premature wear, while the Grade-8 six-point hex bolts include integral washer flanges for superior load distribution and secure clamping during repeated adjustments.

• CNC-machined 6061-T6 billet aluminum construction
• Hard-anodized belt surface for long-term wear resistance
• Laser-etched markings for precise 1-degree timing adjustments
• Grade-8 hex bolts with integral washer flanges for maximum load distribution
• Essential for milled heads, forced induction, or high-compression builds
• Recommended cam gear settings included
• Manufactured and assembled in the USA
• Manufacturer Part Number: 23-802BK

Fits 1993-2001 Honda Prelude (S, SE, Si, Si 4WS, VTEC, Base, and Type SH).

AEM Tru-Time Adjustable Camshaft Gears allow tuners to optimize horsepower and torque without requiring a camshaft change. These gears are essential for engines with milled heads, forced induction, high compression, or aftermarket competition cams where precise timing is critical. Users can advance or retard cam profiles in one-degree increments using high-visibility, laser-etched markings on the leading edge of the gear.

Each gear is CNC-machined from 6061-T6 billet aluminum for a lightweight, durable construction. The belt surface is hard-anodized to prevent premature wear on the timing belt, while Grade-8 six-point hex bolts with integral washer flanges provide secure load distribution during repeated adjustments.

• CNC-machined 6061-T6 billet aluminum construction
• True laser-etched markings for accurate 1-degree timing adjustments
• Hard-anodized gear teeth for maximum belt life
• High-strength Grade-8 hex bolts with integral washer flanges
• Ideal for matching cam timing to specific engine tuning states
• Manufacturer Part Number: 23-801BK

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