Mahle Motorsport Forged Piston Kit - Focus ST225 and RS Mk2 2.5 - Focus ST225 / XR5 Turbo

Absolute Performance Piston Set

Delivery Cost?

RRP: £1,579.00 (inc. VAT)

Our Price: £1569.90 (inc. VAT)

Fully Fitted: £1,569.90 (inc. VAT)

Order quantity  (32 Sold)

Piston Selection
83.00mm (0197827000)83.50mm (0197827005)

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Mahle Motorsport Forged Piston Kit - Focus ST225 and RS Mk2 2.5 - Mahle

• The piston of choice for the very best engines
• Set of 5 pistons complete with rings & pins
• Available in stock size and 0.5mm oversize

Focus ST225 and RS Mk2 2.5 Pistons don't get any better than the Mahle Motorsport PowerPak forged piston kit. 

Mahle's PowerPak piston assemblies include forged pistons, piston rings, pins, and wire locks--all in one race-proven package. The pistons are hand-deburred and then coated with dry phosphate to protect against ring micro-welding and pin galling during initial startup. For additional performance, Mahle added its proprietary Grafal anti-friction coating to the piston skirts. Low drag rings, steel pins, and round wire locks to complete the Mahle PowerPak package.

Pumaspeed have built and prepared some very highly specified 2.5 engines in the U.K. For all motors running over 500 bhp we exclusively recommend the Mahle Motorsport piston range.

The Mahle Motorsport piston range is what we recommend for all high power engine builds, for example you will see that our our fully built engine 2.3 EcoBoost packages built in partnership with Devil Developments (The home of 750bhp 2.3 EcoBoost motors in the UK) always use the Mahle Motorsport pistons.

PowerPak piston sets are Mahle Motorsport’s high volume shelf stock program developed for high performance enthusiasts and engine builders that want uncompromising reliability. They feature 8.5:1 compression ratio and hard anodised ring grooves along with Mahle double coating of dry phosphate to prevent micro welding and pin galling and grafal anti friction coating. Forged from Mahle proprietary M142S alloy these parts have the low noise characteristics of 4032 alloy with the strength of 2618.
 

Technical Specifications:
Model - Focus ST and RS
Engine - 2.5l
Bore - 83.00mm (83.50mm oversize)
Stroke - 93.20mm
Rod Length - 143.00mm
Compression Height - 30.40mm
Pin Diameter - 23mm (Does not suit stock ST225 rods)
Crown Volume - (-)10.77cc
Piston Weight - 324g
Compression Ratio - 8.5:1
Ring Layout - 1.0, 1.2, 2.8mm

Mahle Motorsport are the undisputed technology leader in the piston field. With over 100 years of rich heritage Mahle Motorsport pistons have won championships at all levels, including Formula 1 seasons with 16 out of 18 race wins supporting six of the ten teams, nearly two decades of straight wins at Le Mans, and championships in all three top levels of NASCAR.

Strong, lightweight, low drag forging superior to the traditional full round design. Mahle Motorsport pistons are produced on German manufactured custom forgings per part.

Every Mahle Motorsport piston is machined to exacting tolerances with focused attention given to the radial flatness of the ring grooves. A flat ring groove is essential in achieving and maintaining the best seal possible. The quality of the ring grooves is so critical to peak and lasting performance, that Mahle designed and built the machinery used to machine the ring grooves for its Motorsport piston assemblies.

Mahle Motorsport proprietary Grafal anti-friction skirt coating is like no other on the market. It is graphite impregnated to reduce drag like many other skirt coatings, but this is where the similarities end. The screen print application provides superior adhesion and is designed to last 100,000+ miles. The unique properties of Grafal reduce the harsh contact between the piston skirt and cylinder bore, resulting in much less wear on the bore and significantly reduced piston skirt fatigue. A dry phosphate coating provides the signature grey appearance to the Mahle piston. This dry lubricant coating provides a lubricant film in the pin bores and ring grooves until the oiling system of the engine reaches operating pressure; particularly useful during initial start-up or break-in of engines to protect against galling and micro welding. The piston crown is still machinable. Hard anodised ring grooves provide extra protection against ring groove micro welding for extreme duty applications.

Piston failures can often be traced back to poor and inconsistent pin bore quality or design. The pin bores on every Mahle Motorsport piston are finish machined using CNC equipment specially designed and manufactured by Mahle to precisely control shape, size and alignment. This added control allows for advanced designs and flexibility, resulting in unmatched consistency and performance. Mahle manages every small detail with the type of precision and expertise you would expect from the worlds piston technology leader.

Every Mahle Motorsport piston is supplied as standard with a high strength, light weight, German manufactured gudgeon pin. Other manufacturers offer high strength pins as a cost upgrade, with Mahle they are supplied as standard.

Mahle pioneered the use of piston ring simulation and computer development tools to engineer rings that provide free horsepower by successfully minimizing friction. Mahles ultra flat ring flanks and precision finish also maximise ring to piston sealing. The difference is evident on the dyno and the track.

Mahle Motorsport Forged Piston Kit - Focus ST225 and RS Mk2 2.5

There is no fitting cost available for this product.

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The Mahle Motorsport Forged Piston Kit - Focus ST225 and RS Mk2 2.5 product has been listed by Pumaspeed as fitting the following vehicles:

Focus RS Mk2 2009

Focus ST225 / XR5 Turbo