Nissan Micra K11 Ultimate Performance Camshafts – Distributor Engines

For naturally aspirated K11 builds where the Fast-Road profile isn't quite enough, the Ultimate Performance Camshafts provide a considerably more aggressive step up.

Featuring 272° inlet and exhaust duration, increased valve lift and a quoted 2,500–7,500 RPM power band, the Ultimate profile is designed for more heavily modified engines where higher-RPM performance takes priority over standard road manners.

These are aimed at serious fast-road, track and competition builds with the supporting engine modifications and setup required to make proper use of the more aggressive camshaft profile.

⚠️ IMPORTANT – DISTRIBUTOR ENGINES ONLY

These camshafts are designed for K11 DISTRIBUTOR engines ONLY.

They are NOT suitable for the later Coilpack CG engines.

Please confirm which engine type is fitted to your vehicle before ordering.

Supplied as a PAIR

The advertised price is for a PAIR of camshafts.

Each set consists of:

• 1x Performance Inlet Camshaft
• 1x Performance Exhaust Camshaft

Quantity 1 = 1 Complete Camshaft Pair

Features

• Ultimate Performance Camshaft Profile
• Aggressive 272° Duration
• Supplied as an Inlet & Exhaust Pair
• Suitable for Distributor K11 Engines
• Quoted 2,500–7,500 RPM Power Band
• Increased Valve Lift & Duration
• Estimated Power Increase of up to 12 BHP
• Used-Core & New-Core Options Available
• Designed for Heavily Modified Naturally Aspirated Engines
• Ideal for Serious Fast-Road, Track & Competition Builds
• Professional Installation Required
• Valve Clearances Must Be Correctly Shimmed

Ultimate vs Fast-Road

The Ultimate profile is a significant step up from our Fast-Road camshaft option.

Fast-Road:
248° Duration
1,500–6,800 RPM Power Band
Up to 8 BHP Quoted Increase

Ultimate:
272° Duration
2,500–7,500 RPM Power Band
Up to 12 BHP Estimated Increase

The Fast-Road profile is the better choice where everyday usability and a broad power band are the priority.

The Ultimate profile shifts the focus further up the rev range, making it better suited to engines built around higher-RPM naturally aspirated performance.

As a result, customers should expect greater compromise in idle quality and lower-RPM behaviour compared with the Fast-Road profile.

Used Core or New Core – Which One Is Right for You?

We offer two routes depending on your budget and whether you want to supply your existing camshafts.

Used Core

With the Used Core option, you send us your existing camshafts for re-profiling.

Your camshafts will first be inspected to determine whether they are in suitable condition to be safely re-profiled.

If either camshaft is excessively worn, damaged or otherwise considered unsuitable for re-profiling, we may be unable to proceed using that core.

Any unsuitable camshaft may need to be returned at the customer's cost.

This is the most cost-effective option if your existing camshafts are in serviceable condition.

New Core

Choose the New Core option if you don't want to send us your original camshafts.

The camshafts are produced using brand-new cores, giving you a fresh pair without needing to remove and submit your originals for inspection and re-profiling.

Used Core = Lower-cost option using your suitable existing camshafts.

New Core = Brand-new camshaft cores with no exchange or original camshafts required.

Ultimate Camshaft Specification

Quoted Power Band: 2,500–7,500 RPM
Estimated Power Increase: Up to 12 BHP

About the Estimated Power Increase

The 12 BHP figure is an estimated performance increase for the camshaft profile and should not be interpreted as a guaranteed increase on every engine.

Actual results will depend heavily on the specification and condition of the engine and its supporting modifications.

Factors including the cylinder head, compression ratio, intake system, exhaust system, ignition timing, fuelling and ECU calibration can all significantly affect the final result.

With a profile of this nature, the supporting engine specification becomes increasingly important if you want to make proper use of the additional duration and higher-RPM power band.

⚠️ Shimming Required

These camshafts WILL require the valve clearances to be correctly measured and shimmed during installation.

They should not simply be installed in place of the standard camshafts without checking and setting the valve clearances.

Incorrect valve clearance can result in poor running, excessive valvetrain noise, reduced performance or serious engine and valvetrain damage.

⚠️ Engine Clearance & RPM Considerations

The Ultimate profile has substantially increased duration, lift and TDC lift compared with a standard camshaft.

Correct mechanical clearances must therefore be confirmed during installation.

This is particularly important on engines which have been modified with components such as:

• Skimmed Cylinder Heads
• Higher-Compression Pistons
• Modified Pistons
• Modified Cylinder Heads
• Different Valves or Valve Seats
• Adjustable Cam Timing Components
• Other Non-Standard Valvetrain Components

The installer is responsible for confirming adequate piston-to-valve and valvetrain clearance for the complete engine specification.

The quoted 7,500 RPM upper power-band figure does NOT mean that every standard CG engine is automatically safe to operate at 7,500 RPM.

Maximum safe engine speed depends on the condition and specification of the complete engine and valvetrain.

Professional Installation Required

Professional installation by a suitably qualified engine builder or technician is strongly recommended.

Installation should include appropriate checks of:

• Valve Clearances
• Camshaft Timing
• Piston-to-Valve Clearance
• Valvetrain Condition
• Camshaft Lubrication
• Timing Chain & Associated Components
• Engine Condition
• Suitability of the Complete Engine for the Intended RPM Range

Correct installation and setup are essential before the engine is started.

Fitting Data

Technical fitting and setup information is available from the camshaft manufacturer's fitting data.

This should be consulted during installation, particularly for the specified valve clearances, timing and full-lift positions.

Road & Competition Use

The Ultimate profile is substantially more performance-orientated than the Fast-Road option.

Changes to idle quality, low-speed behaviour, emissions, fuel consumption and general drivability may occur depending on the engine specification and calibration.

For a predominantly road-driven K11 where low and mid-range usability remain important, our Fast-Road camshafts may be the more appropriate option.

For a naturally aspirated build designed around higher-RPM performance, the Ultimate profile is the more aggressive choice.

12-Month Warranty*

This product is warranted to the original purchaser against defects in materials and workmanship for a period of 12 months from purchase.

Our obligation under this warranty is limited to repair or replacement, at our discretion, where inspection confirms a manufacturing or material defect.

Warranty coverage is subject to correct professional installation, lubrication, valve-clearance adjustment and engine setup.

The warranty does not cover damage caused by incorrect shimming, incorrect camshaft timing, inadequate lubrication, piston-to-valve contact, excessive engine speed, defective surrounding valvetrain components, incorrect installation, modification or other engine-related faults.

For re-profiled Used Core camshafts, warranty coverage applies to the supplied machining/re-profiling work and does not cover pre-existing defects, wear or deterioration within the customer's original camshaft cores.

GizFab Motorsport Developments is an independent aftermarket supplier and is not affiliated with, sponsored by, approved by or endorsed by Nissan Motor Co., Ltd.