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Wiseco Pistons Wiseco Pistons - BMW
Includes: moly coated skirts, rings, wrist pins & circlips.
* Non-coated, not supplied with rings.
 
Wiseco is world renown for their work building race winning pistons for compact engines featuring small bores, multi-valves, and high RPM's applications for many years.
 
Features:
  1. Valve Pocket designs that allow max flow around valve, also allowing oversized valves and high lift cams to be utilized.
  2. Piston crown shapes designed to promote max Intake Charge efficiency thru scavenging mixture 'Cross Flow" during intake and exhaust valve overlap. More fuel and air equals more horsepower.
  3. Pistons designed to optimize squish or quench during compression/combustion cycle event, resulting in resistance to detonation and pre-ignition. The end product is longer engine life and increased horsepower potential.
  4. Complex piston skirt profiles that reduce power robbing friction, yet promoting stability in bore for optimum ring seal.
  5. Precision machined ring grooves with proper orifice/accumulator volume using calculated groove root diameters and axial widths, featuring excellent surface finish and flatness providing maximum ring seal and minimizes blow-by and oil consumption.
  6. World class forging facility that utilizes the latest technologies featuring complex forged shapes, advanced materials, and featured aligned grain flw technology.

We also produce many other BMW piston styles.
Please email us for info.

Piston prices marked with an * do not include rings.
If you need rings, please order them here:
Rings with purchase of Wiseco Pistons:
Rings: Price/Set Buy Now Rings: Price/Set Buy Now
4 Cyl £52.99
Qty:
6 Cyl £79.99
Qty:
Rings purchased alone:
Rings: Price/Set Buy Now Rings: Price/Set Buy Now
4 Cyl £65.99
Qty:
6 Cyl £92.99
Qty:
BMW E30 3 Series:
M3 1988-1991 S14 "B25" Stroke (std. bore 93.4)
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K030M935B
 £385*		 93.5 .004 3.425 5.669 1.190 42 -24 8.8 .866 3
Qty:
Metric K030M940B
 £385*		 94.0 .024 87.00 144 30.22 42 -24 8.8 22mm 3
Qty:
Inches K030M935C
 £385*		 93.5 .004 3.425 5.669 1.201 42 -20 9.5 .866 3
Qty:
Metric K030M940C
 £385*		 94.0 .024 87.00 144 30.50 42 -20 9.5 22mm 3
Qty:
Inches K030M935A
 £385*		 93.5 .004 3.425 5.669 1.190 42 -7 11.0 .866 3
Qty:
Metric K030M940A
 £385*		 94.0 .024 87.00 144 30.22 42 FT 11.0 22mm 3
Qty:
  K030M945A
 £385*		 94.5 .044 same info as above 3
Qty:
  K030M950A
 £385*		 95.0 .064 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E30 3 Series:
M3 1988-1991 S14 B23 (std. bore 93.4)
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K031M935B
 £385*		 93.5 (hone) - 3.307 5.669 1.260 42 -24 8.5 .866 3
Qty:
Metric K031M940B
 £385*		 94.0 - 84.00 144 32.00 42 -24 8.5 22mm 3
Qty:
Inches K031M935C
 £385*		 93.5 (hone) - 3.307 5.669 1.260 42 -15 9.8 .866 3
Qty:
Metric K031M940C
 £385*		 94.0 - 84.00 144 32.00 42 -15 9.8 22mm 3
Qty:
Inches K031M935A
 £385*		 93.5 (hone) - 3.307 5.669 1.260 42 -7 10.5 .866 3
Qty:
Metric K031M940A
 £385*		 94.0 - 84.00 144 32.00 42 F/T 10.5 22mm 3
Qty:
  K031M945A
 £385*		 94.5 - same info as above 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E36 3 Series:
09/1992-1995 M50 B25
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K032M840B
 £385*		 84.0 std 2.953 5.512 1.299 34 -10 8.8 .866 3
Qty:
Metric K032M845B
 £385*		 84.5 .020 75.00 140.0 33.00 34 -10 8.8 22mm 3
Qty:
  K032M850B
 £385*		 85.0 .040 same info as above 3
Qty:
Inches K032M840C
 £385*		 84.0 std 2.953 5.512 1.260 34 FT 10.4 .866 3
Qty:
Metric K032M845C
 £385*		 84.5 .020 75.00 140.0 33.00 34 FT 10.4 22mm 3
Qty:
Inches K032M840A
 £385*		 84.0 std 2.953 5.512 1.299 34 2 11.0 .866 3
Qty:
Metric K032M845A
 £385*		 84.5 .020 75.00 140.0 33.00 34 2 11.0 22mm 3
Qty:
  K032M850A
 £385*		 85.0 .040 same info as above 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E36 3 Series:
M52 Single Vanos 1995-1997 B25
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K033M840B
 £385*		 84.0 std 2.953 5.512 1.299 36 -10 8.5 .866 3
Qty:
Metric K033M845B
 £385*		 84.5 .020 75.00 140.0 32.750 36 -10 8.5 22mm 3
Qty:
Inches K033M840C
 £385*		 84.0 std 2.953 5.512 1.260 36 FT 9.0 .866 3
Qty:
Metric K033M845C
 £385*		 84.5 .020 75.00 140.0 32.750 36 FT 9.0 22mm 3
Qty:
Inches K033M840A
 £385*		 84.0 std 2.953 5.512 1.299 36 2 10.6 .866 3
Qty:
Metric K033M845A
 £385*		 84.5 .020 75.00 140.0 32.750 36 2 10.6 22mm 3
Qty:
  K033M850A
 £385*		 85.0 .040 same info as above 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E36 3 Series:
M3 1993-95 US M50 B30
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K035M860A
 £385*		 86.0 std 3.378 5.314 1.286 32 -11 11.0 .866 3
Qty:
Metric K035M865A
 £385*		 86.5 .020 85.80 135.0 32.66 32 -11 11.0 22mm 3
Qty:
  K035M870A
 £385*		 87.0 .040 same info as above 3
Qty:
Inches K035M860B
 £385*		 86.0 std 3.378 5.314 1.286 32 -25 8.8 .866 3
Qty:
Metric K035M865B
 £385*		 86.5 .020 85.80 135.0 32.66 32 -25 8.8 22mm 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E36 3 Series:
M3 1993-1995 "Euro" M50/S50 B30
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K036M860A
 £385*		 86.0 std 3.378 5.590 31.6mm 32 -8 11.0 .827 3
Qty:
Metric K036M865A
 £385*		 86.5 .020 85.80 142.0 31.6mm 32 -8 11.0 21mm 3
Qty:
  K036M870A
 £385*		 87.0 .040 same info as above 3
Qty:
Inches K036M860C
 £385*		 86.0 std 3.378 5.590 31.6mm 32 -12 9.7 .827 3
Qty:
Metric K036M865C
 £385*		 86.5 .020 85.80 142.0 31.6mm 32 -12 9.7 21mm 3
Qty:
Inches K036M860B
 £385*		 86.0 std 3.378 5.590 31.6mm 32 -25 8.8 .827 3
Qty:
Metric K036M865B
 £385*		 86.5 .020 85.80 142.0 31.6mm 32 -25 8.8 21mm 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E36 3 Series:
M3 1996-00 S52 B32 (US Single Vanos)
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K037M865US1
 £385*		 86.5 .004 3.527 5.315 1.215 34.5 -26 8.8 .866 3
Qty:
Metric K037M870US1
 £385*		 87.0 .024 89.60 135.0 30.86 34.5 -26 8.8 22mm 3
Qty:
Inches K037M865US2
 £385*		 86.5 .004 3.527 5.315 1.215 34.5 -12 11.0 .866 3
Qty:
Metric K037M870US2
 £385*		 87.0 .024 89.60 135.0 30.86 34.5 -12 11.0 22mm 3
Qty:
 
BMW E36 3 Series:
M3 1996-99 M50/S50 B32 Euro
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K037M865A
 £385*		 86.5 (hone) .004 3.583 5.472 1.260 34 -12 11.0 .827 3
Qty:
Metric K037M870A
 £385*		 87.0 .024 91.00 139.0 32.00 34 -12 11.0 21mm 3
Qty:
Inches K037M865B
 £385*		 86.5 (hone) .004 3.583 5.472 1.260 34 -27 8.8 .827 3
Qty:
Metric K037M870B
 £385*		 87.0 .024 91.00 139.0 32.00 34 -27 8.8 21mm 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E46 1999 and newer:
M54 B25 1998-00 325i 525i (Double Vanos)
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K038M840A
 £385*		 84.0 std 2.953 5.708 1.092 35 1 11 .866 3
Qty:
Metric K038M845A
 £385*		 84.5 .020 75.00 145.0 27.75 35 1 11 22mm 3
Qty:
Inches K038M840B
 £385*		 84.0 std 2.953 5.708 1.092 35 -8.8 8.8 .866 3
Qty:
Metric K038M845B
 £385*		 84.5 .020 75.00 145.0 27.75 35 -8.8 8.8 22mm 3
Qty:
* Non-coated, not supplied with rings. Rings are available for £52.99 (4 cyl) or $109 (6 cyl). - See top of page.
 
BMW E46 1999 and newer:
M3 Euro S54 B32 (Double Vanos)
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K041M870EUR1
 £385*		 87.0 std 3.583