Pistons

Enhance the performance of your MINI N14 or N18 engine with the MINI N14 N18 77.00mm Piston Ring Kit GNH7700. This high-quality piston ring kit is designed to provide optimal sealing and durability for your engine, ensuring smooth operation and reliable performance.

• Specifically designed for MINI N14 and N18 engines
• Features a diameter of 77.00mm for precise fitment
• Ensures optimal sealing to prevent oil leakage and maintain compression
• Durable construction for long-lasting performance and reliability

Experience top-tier performance with Supertech Piston Rings, meticulously crafted in Japan using advanced technology. Engineered for high-performance applications, these piston rings are specifically designed to optimize engine performance in BMW vehicles.

• Manufactured in Japan with cutting-edge technology for superior quality
• Specifically designed for high-performance applications
• Ideal for ensuring peak engine performance in BMW vehicles
• Four sets required for a complete engine overhaul

Supertech Pistons are the pinnacle of high-performance engineering, designed to take your engine to the next level. Manufactured from an extruded high-silicone, enhanced 4032 alloy with added copper (Cu), nickel (Ni), and magnesium (Mg), these pistons boast low thermal expansion, exceptional wear resistance, and superior thermal conductivity. They are built to handle high levels of boost, up to 42psi, even when using alcohol fuel.

The manufacturing process involves a meticulous two or three-step forging process, resulting in a fine structural grain. Subsequent machining steps are executed with precision using state-of-the-art CNC machines. Multiple heat treatments impart high tensile strength and uniform hardness to the pistons.

Standard features of Supertech Pistons include contact reduction grooves and meticulously honed and reamed pin bores, ensuring a precise fit. The wrist pins are constructed from cold-extruded chrome moly steel, guaranteeing exceptional strength and are secured with wire clip locks.

To further enhance performance and longevity, these pistons receive a 'phosphate dry lubricant' coating. This coating not only safeguards the rings against 'micro-welding' but also improves lubrication in the skirt/cylinder area.

Supertech Pistons are designed to work with a .030" head gasket and .010" deck, with compression ratios calculated accordingly. Please note that rings are sold separately.

These pistons are compatible with N14 and N18 engines for the Cooper S, making them a perfect choice to unlock the true potential of your engine.

Supertech Pistons offer top-tier performance with their advanced construction and high-quality materials. Crafted from extruded high-silicone, enhanced 4032 alloy, these pistons boast exceptional durability, low thermal expansion, and superior wear resistance. Engineered for maximum performance, Supertech Pistons can withstand high boost levels, making them ideal for high-performance applications.

• Manufactured from extruded high-silicone, enhanced 4032 alloy
• Withstands up to 42psi of boost with alcohol
• Fine structural grain achieved through a two or three-step forging process
• Heat treatments provide high tensile strength and evenly distributed hardness
• Features contact reduction grooves and honed pin bores for precise fit
• Wrist pins made of cold extruded chrome moly steel for added strength
• Coated with 'phosphate dry lubricant' for ring protection and enhanced lubrication

Supertech Pistons are meticulously crafted from an enhanced 4032 alloy, delivering exceptional performance and reliability for your BMW. Designed to withstand up to 42psi of boost with alcohol, these pistons boast superior wear resistance and low thermal expansion for enduring performance.

Benefits:

• High-quality enhanced 4032 alloy for low thermal expansion and wear resistance
• Endures up to 42psi of boost with alcohol, ensuring reliable performance
• Fine structural grain due to a two or three-step forging process
• High tensile strength with heat treatments and precision machining
• Contact reduction grooves, precise pin bores, and chrome moly steel wrist pins for durability

Supertech Pistons offer exceptional durability and performance for your Mini, crafted from extruded high silicone, enhanced 4032 alloy. With low thermal expansion, excellent wear resistance, and higher thermal conductivity, these pistons are designed to withstand up to 42psi of boost with alcohol. Benefits include:

• Manufactured from high-quality 4032 alloy with additional Cu, Ni & Mg for enhanced performance.
• Two or three-step forging process for fine structural grain.
• Heat treatments for high tensile strength and evenly distributed hardness.
• Contact reduction grooves and precise pin bores for optimal fit.
• Wrist pins made of cold extruded chrome moly steel for durability.
• Phosphate dry lubricant coating for ring protection and enhanced lubrication.

Compression ratios are computed with .030" head gasket and .010" deck unless indicated in each case. Rings are sold separately.