CPR's Transmission overhaul, rebuild and upgrade service stems from our understanding of the GTR's transmission through experience in servicing, upgrading and racing the Nissan GT-R. Our knowledge of this transmissions strengths & weaknesses in design has grown since importing a JDM Model early in 2008, well ahead of most other European Tuners. Having raced GTR's at the track across Europe, we understand the requirements of the transmission under normal and extreme conditions and have many upgrade parts for the GR6 Transmission to suit. We are also market leaders in Fault Diagnostic and Repair of this transmission, where we have supported both Import and UK GTR Owners in rectifying faults that have occured. We believe Nissan UK have little experience and service to offer in terms of Gearbox Failure and Repair, where internal component failure can unnecessarily result in a GTR owner having to purchase a complete transmission assembly at a cost of over £13,000.00 !. CPR purchased a new transmission assembly early on in our GTR research programme, so that we could familiarise ourself with its internals and to assess ways in which we could improve on it to support racing and high hp applications. Nissan UK do not offer spare or overhaul parts for the GTR transmission and therefore, to support owners we have designed and manufactured our own line of products reflecting on the weaknesses in the stock gtr transmission components and improving on design flaws in other aftermarket attempts at solutions.

Symptoms: Excessive Noise/Rattle from Transmission. No Front Wheel Drive / No Drive at all

CPR 4WD Front Circlip Retainer Upgrade Fitted Price: £795.00+VAT (£954.00inc.VAT)

ESSENTIAL UPGRADE FOR ANY GT-R OWNER! Totally eliminates the common Front Circlip Failure that can occur on all GR6 Transmissions. If the standard circlip fails, then a loose 4WD gear / gear off failure will occur leading to total transmission failure Our upgrade overcomes the design flaw, and permanently fixes the Front Circlip to the Nose end of the 4WD Output Shaft The installation requires removal of the gearbox to install, which CPR can carry out in 1 day (or whilst you wait) Once installed, we warrant the gearbox for life against front circlip failure!* Our CNC Machined Circlip Retainer is made from high quality aerospace alloy, precision machined to our specifications Designed and tested by CPR Fitted Price above does not include new Transmission Oil, the original fluid is retained by sealed extraction container, and re-installed into the Transmission if prefered. Please note, if the Transmission Fluid level is low, we will inform you and we will then charge per litre to fill to correct level CPR are happy to replace the Transmission Oil if close to Service Interval (additional cost is +£195.00+VAT) CLICK HERE TO VIEW IMAGES OF CIRCLIP FAILURES! WE WARN YOU, THIS IS NOT A PRETTY SIGHT! THIS CAN OCCUR IF YOU DO NOT PERMANENTLY FIX/RETAIN THE FRONT CIRCLIP. FAILURE IS INEVITABLE WITHOUT THE FRONT CIRCLIP RETAINER UPGRADE! Please call our sales line on +44 (0)1925 414199 to order.

Click Image above to go to gallery of product Symptoms: No Drive / Clutch Slip in Even or Odd Gears / Difficulty or Hesitation shifting up and down box.

CPR Heavy Duty Clutch Housing & Seal Assembly Upgrades Even Gear (B) & Odd (A) Gear Parts : £1650.00+VAT / Fitting Price: £650.00+VAT

CPR Heavy Duty Clutch Basket/Housing Assembly with Uprated Clutch Piston Seal The GR6 Transmission uses a Twin Wet Clutch Design, where R, 1, 3 & 5th Gear are controlled by Clutch Pack A, and 2, 4, 6 are controlled by Clutch Pack B. Each Clutch Pack is contained by a basket and piston, with rubberised bonded seals to retain high fluid pressure which actuate the clutches. Seal failure is one of the most common faults we have noticed on the GTR Transmission, leading to loss of drive in even or odd gears. This procedure can be considered as an uprgade for modified cars running higher clamping pressure on standard and uprated clutch plates OR as a direct replacement for the original baskets. A very common problem on the stock gearbox, is a worn Clutch Pack Piston Seal, where the Nissan seal will begin the fail (lose pressure) which will cause problems shifting into gear. NISSAN DO NOT OFFER THIS RUBBER SEAL AS A SPARE PART. If this seal fails, Nissan expect the owner to buy a new complete gearbox! Our new Clutch Baskets are massively uprated, to support over 1000bhp, with superior strength and materials used Our CNC Machined Parts are made from high quality aerospace alloy, precision machined to our specifications The seals are designed to our specification in a massively uprated material that WILL NOT FAIL like the Nissan seals do. The material is a very durable Vitol based rubber which is very resistant to extremely high temperatures (as used in racing valve seals) and aggressive oils/fuels Designed and tested by CPR Fitted Price above does not include new Transmission Oil, the original fluid is retained by sealed extraction container, and re-installed into the Transmission if prefered. Please note, if the Transmission Fluid level is low, we will inform you and we will then charge per litre to fill to correct level CPR are happy to replace the Transmission Oil if close to Service Interval (additional cost is +£195.00+VAT) CLICK HERE TO VIEW IMAGES OF NISSAN O.E CLUTCH PACK SEAL FAILURES! Please call our sales line on +44 (0)1925 414199 to order.