Upgrade your 2010-2013 Mini R56 N18 with Supertech Forged Pistons. Designed for Turbo/Nitrous use, these +0.5mm oversize (77.50mm) pistons feature a 10:1 compression ratio, crafted from high-silicone 4032 aluminum for durability.
Includes 4 pistons, wrist pins, and wire locks. Elevate performance--order now!
Vehicle Fitment
2010-2013 Mini Cooper S, R56, N18 1.6L Turbo
2010-2013 Mini John Cooper Works (JCW), R56, N18 1.6L Turbo
Fitment Notes
N18 engine specifically -- not for N14 engine
0.5mm oversize (77.50mm bore, standard is 77.00mm)
Rings excluded -- requires ring set R77.5-GNH7750, sold separately
10:1 compression ratio -- distinct from 10.5:1 sibling SKU
Sold as a set of 4
Features
Forged 4032 high-silicone aluminum alloy
Multi-stage forging for fine grain structure
CNC-machined for precision fit
Chrome-moly wrist pins, wire clip locks
Phosphate dry lubricant coating
Contact reduction grooves
Rated for Turbo/Nitrous applications
Tested to 42 psi boost with alcohol fuel
Specifications
Bore: 77.50mm (+0.5mm oversize)
Compression ratio: 10:1
Compression height: 28.70mm
Stroke: 85.8mm
Rod length: 5.454"
Pin diameter: 20mm (0.787")
Head volume: 37.6cc
Skirt style: Slipper design
Weight: 267g each
Material: 4032 aluminum alloy
Included Components
4x Forged Pistons
4x Chrome-Moly Wrist Pins
Wire Clip Locks
Product Description
Supertech's forged piston set is engineered for the Mini Cooper S and John Cooper Works R56 running the N18 1.6L turbo engine, built to handle serious boost and nitrous without sacrificing reliability. Forged from high-silicone 4032 aluminum alloy through a multi-stage process that aligns grain structure with stress paths, these pistons have been proven to withstand up to 42 psi of boost on alcohol fuel.
Precision CNC machining ensures dimensional accuracy and balance across the set, with contact reduction grooves and a phosphate dry lubricant coating protecting against micro-welding and improving skirt-to-cylinder lubrication. Chrome-moly wrist pins with wire clip locks round out a set built for both street-boosted and race applications.
This +0.5mm oversize set (77.50mm bore, 10:1 compression) is sold without rings -- pair with ring set R77.5-GNH7750 for a complete rebuild. Confirm engine code (N18, not N14) and required overbore before ordering, as Supertech offers multiple closely-numbered bore/compression variants for this platform.
*Parts are for USA spec vehicles, please contact us to verify fitment on JDM & international models.
· · · SHIPPING · · ·
Free shipping across the contiguous 48 United States (excludes Hawaii and Alaska). Item(s) ships on the same day or within 1 business day. Delivery time is within 2 to 4 business days excluding next day deliveries. Orders over $750 require signature for delivery.
Canada customers - If eBay does not collect import & duty fees during checkout, the shipping carrier will collect them prior to delivery.
· · · RETURNS · · ·
Your complete shopping satisfaction is our #1 priority. If an item you ordered from us does not meet your expectations, please contact us within 30 days of receiving the item(s). If your order arrives damaged from shipping please contact us and we will provide a prepaid return label to send back for a replacement or refund.
Returned items must be in the original packaging (including plastic wrapped items) and in brand new condition.
Any returns received installed, mounted, used or missing components will be subject to return fee's.
· · · PAYMENTS · · ·
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PayPal, and all major credit cards/debit cards are accepted.
· · · FEEDBACK · · ·
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· · · CONTACT US · · ·
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