HKS 22002-AN027 Step 2 264 Deg 12mm Exhaust Camshaft for Nissan SR20DET S13/S14/S1

Vehicle Fitment

• 1989-1993 Nissan Silvia S13 / PS13 (SR20DET, DOHC 16V, RWD) - JDM
• 1991-1998 Nissan 180SX / RPS13 (SR20DET, DOHC 16V, RWD) - JDM
• 1993-1998 Nissan Silvia S14 (SR20DET, DOHC 16V, RWD)
• 1999-2002 Nissan Silvia S15 (SR20DET, DOHC 16V, RWD)

Fitment Notes

• Exhaust camshaft only - does NOT include an intake camshaft; the matching Step 2 intake cam for PS13/RPS13 is HKS 22002-AN028, and for S14/S15 is HKS 22002-AN026
• Fits all SR20DET variants sharing the same DOHC 16-valve cylinder head across the PS13, RPS13, S14, and S15 platforms
• Upgraded valve springs are REQUIRED for Step 2 camshafts - the 12.0mm lift exceeds the safe operating range of OEM valve springs. HKS recommends the complete HKS Step 2 Head System (22010-AN002), or the combination of HKS Valve Springs (22001-AN002) and HKS Rocker Arm Stoppers (2299-RN005)
• Installing Step 2 camshafts without upgraded valve springs risks valve float, valve-to-piston contact, and catastrophic engine damage at elevated RPM
• ECU/engine management recalibration is required after installation for optimum performance - HKS notes that computer resetting is necessary to achieve best camshaft performance
• Adjustable cam gears or a sliding cam sprocket are recommended to optimize valve timing for your specific build and power goals
• Not legal for street use in California (not CARB-approved) - for off-road and competition use only
• Step 2 camshafts are optimized for builds targeting over 450 PS with an 8,000 RPM rev limit - not recommended for stock or lightly modified engines where Step 1 (22002-AN024) provides a better balance of streetability and performance

Features

• Step 2 profile - 264° duration and 12.0mm valve lift represent a meaningful step up from Step 1 (256°/11.5mm), delivering greater peak power output and extending the usable powerband further into the high-RPM range
• Designed valve timing of 114° (exhaust centerline) - optimized for compatibility with the SR20DET's NVCS variable cam timing system and high-performance tuning targets
• Machined from new billet cores using a high nickel content iron alloy - not reground or remanufactured OEM units; new billet construction ensures consistent lobe geometry, superior surface hardness, and equal or greater durability versus OEM
• CAD-designed lobe profiles - each step and application was developed via computer-aided design to optimize torque and horsepower delivery across the broadest possible power band for that specific SR20DET application
• Direct-fit OEM replacement dimensions - designed to install in the stock SR20DET head without machining or shimming modifications
• Compatible with the factory valve train components when accompanied by the required upgraded valve springs and rocker arm stoppers
• Paired with a Step 2 intake cam (22002-AN028 for PS13 or 22002-AN026 for S14/S15), this exhaust cam forms a complete Step 2 cam package tuned for high-RPM power production on turbocharged SR20DET builds
• Engineered and manufactured by HKS, with extensive SR20DET motorsport development history dating to the platform's introduction

Specifications

• Part Number: 22002-AN027
• Step: Step 2 (S2)
• Position: Exhaust
• Duration: 264°
• Valve Lift: 12.0mm
• Designed Valve Timing: 114° (exhaust centerline)
• Compatible Engine: Nissan SR20DET (DOHC, 16V, 2.0L turbocharged)
• Construction: New billet, high nickel content iron alloy
• Valve Springs: Upgraded springs REQUIRED (OEM springs NOT sufficient)
• Recommended Head System: HKS Step 2 Head System 22010-AN002
• Alternative Spring Kit: HKS Valve Springs 22001-AN002 + HKS Rocker Arm Stoppers 2299-RN005
• Target Build: 450+ PS, 8,000 RPM rev limit
• CARB Status: Not approved - not for street use in California
• UPC: 4957266642085

Included Components

• 1x HKS Step 2 SR20DET exhaust camshaft (22002-AN027)

Product Description

The HKS 22002-AN027 is a Step 2 exhaust camshaft for the Nissan SR20DET, offering 264° of duration and 12.0mm of valve lift - specifications calibrated for turbocharged SR20DET builds targeting serious power output above 450 PS at sustained high-RPM operation up to 8,000 RPM. Fitment covers the full range of JDM SR20DET S-chassis platforms: the PS13/RPS13 Silvia and 180SX, the S14 Silvia, and the S15 Silvia. Unlike reground or remanufactured aftermarket camshafts, the 22002-AN027 is machined from a fresh billet core using a high nickel content iron alloy, ensuring lobe geometry precision and surface hardness that matches or exceeds the OEM unit it replaces - a distinction that matters significantly in high-stress, high-RPM turbocharged applications.

The Step 2 designation in HKS's SR20DET camshaft lineup places this part above the Step 1 (256°/11.5mm, 22002-AN024) which remains compatible with OEM valve springs, and below the Step 3 profiles which demand a full head rebuild with lash killers. The 22002-AN027 occupies the performance sweet spot for serious street and track SR20DET builds: more aggressive than Step 1 for a meaningful increase in high-RPM power, while still using the existing valve train architecture when paired with upgraded springs. The designed valve timing of 114° (exhaust centerline) works in concert with the SR20DET's NVCS variable cam timing system, and the CAD-optimized lobe profile delivers a broader and more usable powerband than a simple duration or lift increase alone would suggest.

One critical requirement: the 12.0mm lift of the Step 2 exhaust cam exceeds what OEM valve springs can safely control at elevated RPM. Installing this camshaft without upgraded valve springs risks valve float, coil bind, and potentially catastrophic valve-to-piston contact. HKS recommends the complete Step 2 Head System (22010-AN002) as the most comprehensive solution, or the combination of HKS Valve Springs (22001-AN002) with HKS Rocker Arm Stoppers (2299-RN005) as a component alternative. ECU recalibration is also required after installation - HKS specifically notes that computer resetting is necessary to realize the full performance benefit of these camshafts. For a complete Step 2 cam package, pair this exhaust cam with HKS 22002-AN028 (Step 2 intake for PS13/RPS13) or HKS 22002-AN026 (Step 2 intake for S14/S15).