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BRIAN CROWER -Adjustable Cam Gears - Gold (Subaru EJ205 - Wrx / EJ257 - Sti) - Set/2

BRIAN CROWER -Adjustable Cam Gears – Gold (Subaru EJ205 – Wrx / EJ257 – Sti) – Set/2

£484.38 Inc. VAT

SKU: BC8860-EX Categories: , , Brand:

Description

Part Number: BC8860-EX

Brian Crower Adjustable Exhaust Cam Gears (Set of 2) for Subaru EJ205 / EJ257

Optimize exhaust cam timing and dial in maximum horsepower and torque on your single AVCS Subaru EJ engine with Brian Crower precision adjustable cam gears.

Key Product Features

  • ☑ Aerospace-Grade Construction: CNC-machined 6061-T6 billet aluminum hubs provide exceptional tensile strength and reduced rotational inertia.
  • ☑ Hardened Steel Gear Ring: 4140 cold-rolled, heat-treated steel 39-tooth outer gear rings ensure long wear life and zero tooth distortion.
  • ☑ Micrometer Laser Etching: High-visibility laser-etched face features precision micrometer timing marks for fast, accurate adjustment up to ±10 degrees.
  • ☑ High-Clamping Fasteners: Six ARP 12-point stainless steel fasteners per gear eliminate gear slip under extreme high-RPM conditions.
  • ☑ Corrosion-Resistant Finish: Hard anodized gold hub and black gear teeth shield against corrosion and oil deterioration.

Technical Specifications


Manufacturer Brian Crower (BC)
Part Number BC8860-EX
Engine Compatibility Subaru EJ205 / EJ255 / EJ257 (Exhaust Side, Single AVCS)
Position / Kit Contents Exhaust Side Only (Pair / Set of 2)
Hub Material 6061-T6 Billet Aluminum
Outer Ring Material 4140 Cold-Rolled Heat-Treated Steel
Adjustment Range ±10 Degrees
Fasteners 6 x ARP 12-Point Stainless Steel Hardware per Gear

What’s Included in the Box

  • 2x Brian Crower Adjustable Exhaust Cam Gears (BC8860-EX)
  • Pre-installed ARP 12-point stainless steel clamping hardware
  • Brian Crower manufacturer documentation and decal pack

Designed and manufactured in the USA for high-horsepower road and track applications, Brian Crower valvetrain components are built to exacting standards. JP Racing supplies authentic Brian Crower products direct with rapid UK shipping and dedicated technical support.

Frequently Asked Questions

No. The BC8860-EX kit includes 2 adjustable cam gears specifically designed for the exhaust side of single AVCS Subaru EJ205, EJ255, and EJ257 engines. If you require a complete set of 4 adjustable cam gears for non-AVCS intake and exhaust setups, you should select part number BC8860.

The ARP adjustment bolts on each Brian Crower cam gear should be torqued to 10–12 ft-lbs (13.5–16.3 Nm). Always check bolt torque prior to engine installation to ensure proper clamping force.

Yes. Adjusting camshaft timing alters engine volumetric efficiency, powerband position, and cylinder pressures. ECU recalibration and professional dyno tuning are strongly recommended to optimize power output and safely match fueling and ignition maps.

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