Audi S2 RS2 S4 S6 2.2 2.3 2.5 20V

Product detailed specification
Bore size	81.50mm
Stroke	86.40mm
Wiseco compression ratio (CR)	8.1:1
OEM compression ratio (CR)	9.3:1
Dome volume (CC)	-7.40cm3
Compression height (CH)	32.65mm
Pin diameter	20mm
Features	Accepts Turbo and Nitrous; FSR Series
Fits for	Audi 2.2 20V Turbo (3B, ABY, ADU, AAN)

Armor Plated Wiseco pistons have almost a bronze colored tint to the top of the piston and the wrist pin bore. Wiseco's Armor Plating is an abrasion resistant plating that raises the hardness of the aluminum, increases the durability of the ring grooves, prevents micro-welding of the piston rings, reduces carbon buildup and combats corrosion caused by detonation. Wiseco's most popular pistons now include Armor Plating.

Kit includes:

1 x girdle plate (10mm thickness)
12 x spacers
12 x 12.9 grade steel bolts

Kit includes:

1 x girdle plate (10mm thickness)
12 x spacers
12 x ARP studs

Product detailed specification
Head diameter	28mm
Stem diameter	7mm
Length	98mm
Fits for	Audi / VW - 1.8 16V, 2.0 16V, 2.2T 20V, 2.3 20V (KR, PL, 6A, 9A, ABF, 3B, AAN, ABY, ADU, 7A)

Product detailed specification
Head diameter	32mm
Stem diameter	7mm
Length	95.5mm
Fits for	Audi / VW - 1.8 16V, 2.0 16V, 2.2T 20V, 2.3 20V (KR, PL, 6A, 9A, ABF, 3B, AAN, ABY, ADU, 7A)

8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi

Lifter data:
Outer diameter - 34.97mm
Inner diameter - 33.10mm
Outer height - 26.30mm
Stem length - 14.70mm
Stud diameter - 7.00mm
Weight - 50g
20 pcs. FCP Engineering racing mechanical solid lifters.
Forged steel, nitride hardened surface, HRC 50.
Installed follower height to camshaft must be adjusted with lash caps (not included).

The 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. They have higher fatigue resistance and tensile strengths than our competitor’s best offerings.

To manufacture the valves we use our exclusive two-step slow forging process using EV8 stainless steel on both intake and exhaust valves.We provide a special heat-treatment and stress relieving process, along with hard chrome stems and friction-welded hard tips. We finish with a swirl polished head. The valves feature flow improvements to deliver the power needed for today’s sophisticated racing engines.

The 6000 Series Competition Valves are designed to provide excellent reliability in an environment of high spring pressures and roller cams, at a budget price. They have higher fatigue resistance and tensile strengths than our competitor’s best offerings.

To manufacture the valves we use our exclusive two-step slow forging process using EV8 stainless steel on both intake and exhaust valves.We provide a special heat-treatment and stress relieving process, along with hard chrome stems and friction-welded hard tips. We finish with a swirl polished head. The valves feature flow improvements to deliver the power needed for today’s sophisticated racing engines.