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Wiseco Pistons Wiseco Pistons - BMW
Includes: moly coated skirts, rings, wrist pins & circlips.
 (* = Custom, 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.
 
Stocking Shelf Pistons come complete with:
  1. Aerospace grade materials, forged for maximum strength.
  2. Precision tolerance CNC machining for quality, repeatability and performance.
  3. Crown thickness and ring lands designed for power adders such as forced induction (turbos & blowers) and
    nitrous oxide. Note: High compression pistons are generally de signed for naturally aspired application.
  4. High Quality Piston Rings featuring positive twist nitride steel top ring, Napier 2nd ring, and nitrided rails on a
    specially designed expander for the best oil control.
  5. Wrist Pins constructed of chrome moly steel material for the ultimate in strength.
  6. Honed/Reamed pin bore holes for a precise tolerance fi t between wrist pin and piston.
  7. Wire Retainer Clip Lock, featuring chrome silicon material for the ultimate yield strength.
  8. Piston deburred for performance and reliability.
  9. Piston weights listed may vary.
  10. All specs based on U.S. engine codes unless noted.

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 $89
6 Cyl $129
Rings purchased alone:
Rings: Price/Set Buy Now Rings: Price/Set Buy Now
4 Cyl $109
6 Cyl $149
BMW E30 3 Series:
M3 1988-1991 S14 "B25" Stroke (std. bore 93.4) 4 cyl.
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K030M935B
 $479*		 93.5 .004 3.425 5.669 1.190 42 -24 8.8 .866 3
Metric K030M940B
 $479*		 94.0 .024 87.00 144 30.22 42 -24 8.8 22mm 3
Inches K030M935C
 $479*		 93.5 .004 3.425 5.669 1.201 42 -20 9.5 .866 3
Metric K030M940C
 $479*		 94.0 .024 87.00 144 30.50 42 -20 9.5 22mm 3
Inches K030M935A
 $479*		 93.5 .004 3.425 5.669 1.190 42 -7 11.0 .866 3
Metric K030M940A
 $479*		 94.0 .024 87.00 144 30.22 42 FT 11.0 22mm 3
  K030M945A
 $479*		 94.5 .044 same info as above 3
  K030M950A
 $479*		 95.0 .064 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
BMW E30 3 Series:
M3 1988-1991 S14 B23 (std. bore 93.4) 4 cyl.
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K031M935B
 $479*		 93.5 (hone) - 3.307 5.669 1.260 42 -24 8.5 .866 3
Metric K031M940B
 $479*		 94.0 - 84.00 144 32.00 42 -24 8.5 22mm 3
Inches K031M935C
 $479*		 93.5 (hone) - 3.307 5.669 1.260 42 -15 9.8 .866 3
Metric K031M940C
 $479*		 94.0 - 84.00 144 32.00 42 -15 9.8 22mm 3
Inches K031M935A
 $479*		 93.5 (hone) - 3.307 5.669 1.260 42 -7 10.5 .866 3
Metric K031M940A
 $479*		 94.0 - 84.00 144 32.00 42 F/T 10.5 22mm 3
  K031M945A
 $479*		 94.5 - same info as above 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (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
 $699*		 84.0 std 2.953 5.512 1.299 34 -10 8.8 .866 3
Metric K032M845B
 $699*		 84.5 .020 75.00 140.0 33.00 34 -10 8.8 22mm 3
  K032M850B
 $699*		 85.0 .040 same info as above 3
Inches K032M840C
 $699*		 84.0 std 2.953 5.512 1.260 34 FT 10.4 .866 3
Metric K032M845C
 $699*		 84.5 .020 75.00 140.0 33.00 34 FT 10.4 22mm 3
Inches K032M840A
 $699*		 84.0 std 2.953 5.512 1.299 34 2 11.0 .866 3
Metric K032M845A
 $699*		 84.5 .020 75.00 140.0 33.00 34 2 11.0 22mm 3
  K032M850A
 $699*		 85.0 .040 same info as above 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (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
 $699*		 84.0 std 2.953 5.512 1.299 36 -10 8.5 .866 3
Metric K033M845B
 $699*		 84.5 .020 75.00 140.0 32.750 36 -10 8.5 22mm 3
Inches K033M840C
 $699*		 84.0 std 2.953 5.512 1.260 36 FT 9.0 .866 3
Metric K033M845C
 $699*		 84.5 .020 75.00 140.0 32.750 36 FT 9.0 22mm 3
Inches K033M840A
 $699*		 84.0 std 2.953 5.512 1.299 36 2 10.6 .866 3
Metric K033M845A
 $699*		 84.5 .020 75.00 140.0 32.750 36 2 10.6 22mm 3
  K033M850A
 $699*		 85.0 .040 same info as above 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (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
 $699*		 86.0 std 3.378 5.314 1.286 32 -11 11.0 .866 3
Metric K035M865A
 $699*		 86.5 .020 85.80 135.0 32.66 32 -11 11.0 22mm 3
  K035M870A
 $699*		 87.0 .040 same info as above 3
Inches K035M860B
 $699*		 86.0 std 3.378 5.314 1.286 32 -25 8.8 .866 3
Metric K035M865B
 $699*		 86.5 .020 85.80 135.0 32.66 32 -25 8.8 22mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (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
 $699*		 86.0 std 3.378 5.590 31.6mm 32 -8 11.0 .827 3
Metric K036M865A
 $699*		 86.5 .020 85.80 142.0 31.6mm 32 -8 11.0 21mm 3
  K036M870A
 $699*		 87.0 .040 same info as above 3
Inches K036M860C
 $699		 86.0 std 3.378 5.590 31.6mm 32 -12 9.7 .827 3
Metric K036M865C
 $699*		 86.5 .020 85.80 142.0 31.6mm 32 -12 9.7 21mm 3
Inches K036M860B
 $699*		 86.0 std 3.378 5.590 31.6mm 32 -25 8.8 .827 3
Metric K036M865B
 $699*		 86.5 .020 85.80 142.0 31.6mm 32 -25 8.8 21mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
BMW E36 3 Series:
M3 1996-00 S52(M52)(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
 $699*		 86.5 .004 3.527 5.315 1.215 34.5 -26 8.8 .866 3
Metric K037M870US1
 $699*		 87.0 .024 89.60 135.0 30.86 34.5 -26 8.8 22mm 3
Inches K037M865US2
 $699*		 86.5 .004 3.527 5.315 1.215 34.5 -12 11.0 .866 3
Metric K037M870US2
 $699*		 87.0 .024 89.60 135.0 30.86 34.5 -12 11.0 22mm 3
 
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
 $699*		 86.5 (hone) .004 3.583 5.472 1.260 34 -12 11.0 .827 3
Metric K037M870A
 $699*		 87.0 .024 91.00 139.0 32.00 34 -12 11.0 21mm 3
Inches K037M865B
 $699*		 86.5 (hone) .004 3.583 5.472 1.260 34 -27 8.8 .827 3
Metric K037M870B
 $699*		 87.0 .024 91.00 139.0 32.00 34 -27 8.8 21mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (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
 $699*		 84.0 std 2.953 5.708 1.092 35 1 11 .866 3
Metric K038M845A
 $699*		 84.5 .020 75.00 145.0 27.75 35 1 11 22mm 3
Inches K038M840B
 $699*		 84.0 std 2.953 5.708 1.092 35 -8.8 8.8 .866 3
Metric K038M845B
 $699*		 84.5 .020 75.00 145.0 27.75 35 -8.8 8.8 22mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (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
 $699*		 87.0 std 3.583 5.472 1.260 33 -12 11.3 .827 3
Metric K041M875EUR1
 $699*		 3.425 .020 91.00 139.0 32.00 33 -12 11.3 21mm 3
Inches K041M870EUR2
 $699*		 87.0 std 3.583 5.472 1.260 33 -27 8.8 .866 3
Metric K041M875EUR2
 $699*		 3.425 .020 91.00 139.0 32.00 33 -27 8.8 22mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
BMW E46 1999 and newer:
M3 2001-2005 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 K041M865A
 $699*		 86.5 std 3.583 5.472 1.268 33 -12 11.3 .827 3
Metric K041M870A
 $699*		 87.0 .020 91.00 139.0 32.20 33 -12 11.3 21mm 3
Inches K041M865B
 $699*		 86.5 std 3.583 5.472 1.268 33 -27 8.8 .827 3
Metric K041M870B
 $699*		 87.0 .020 91.00 139.0 32.20 33 -27 8.8 21mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
BMW S38:
M5/M6 1988 S38 B35
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K042M935A
 $699*		 93.5 .004 3.307 5.669 1.190 34 -24 8.3 .866 3
Metric K042M940A
 $699*		 94.0 .024 84.0 144.0 30.22 34 -24 8.3 22mm 3
Inches K042M935B
 $699*		 93.5 .004 3.307 5.669 1.201 34 -19 9.0 .866 3
Metric K042M940B
 $699*		 94.0 .024 84.0 144.0 30.50 34 -19 9.0 22mm 3
Inches K042M935C
 $699*		 93.5 .004 3.307 5.669 1.260 34 -24 9.7 .866 3
Metric K042M940C
 $699*		 94.0 .024 84.0 144.0 32.00 34 -24 9.7 22mm 3
Inches K042M935D
 $699*		 93.5 .004 3.307 5.669 1.190 34 -7 10.3 .866 3
Metric K042M940D
 $699*		 94.0 .024 84.0 144.0 30.22 34 -7 10.3 22mm 3
Inches K042M935E
 $699*		 93.5 .004 3.307 5.669 1.260 34 -15 11.0 .866 3
Metric K042M940E
 $699*		 94.0 .024 84.0 144.0 32.00 34 -15 11.0 22mm 3
Inches K042M935F
 $699*		 93.5 .004 3.307 5.669 1.260 34 -7 FT 12.6 .866 3
Metric K042M940F
 $699*		 94.0 .024 84.0 144.0 32.00 34 -7 FT 12.6 22mm 3
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
BMW S38:
M5 1992 S38 B36
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K043M935A
 $699*		 93.5 .004 3.386 5.669 1.190 34 -24 9.4 .866 3
Metric - - - 86.0 144.0 30.22 - - - 22mm - -
Inches K043M935B
 $699*		 93.5 .004 3.386 5.669 1.201 34 -19 10.3 .866 3
Metric - - - 86.0 144.0 30.50 - - - 22mm - -
Inches K043M935C
 $699*		 93.5 .004 3.386 5.669 1.190 34 -7 FT 12.0 .866 3
Metric - - - 86.0 144.0 30.22 - - - 22mm - -
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
BMW S38:
M5 1994 S38 B38
Series # Bore
MM		 Over
Sizes		 Stroke Rod
Length		 Comp
Ht.		 Head
cc's		 Dome/
Dish		 Comp
Ratio		 Pin
Dia.		 Notes Buy
Now
Inches K044M950A
 $699*		 95.0 .016 3.543 5.610 1.190 34 -24 10.0 .866 3
Metric - - - 90.00 142.50 30.22 - - - 22mm - -
Inches K044M950B
 $699*		 95.0 .016 3.543 5.610 1.201 34 -19 11.3 .866 3
Metric - - - 90.00 142.50 30.50 - - - 22mm - -
Inches K044M950C
 $699*		 95.0 .016 3.543 5.610 1.190 34 -7 FT 13.3 .866 3
Metric - - - 90.00 142.50 30.22 - - - 22mm - -
* Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
 
Notes:
#1 Most Wiseco pistons have offset pins. Pins must be offset the same as o.e. for quietest operation - Pin offset will be opposite of direction of engine rotation.
#3 Non-coated, not supplied with rings. Rings are available for $89 (4 cyl) or $129 (6 cyl). - See top of page.
#4 This piston made w/stock compression height, which is very close to cylinder head. Use Cometic thick gasket if decking block.
Notes: that apply to all Part #'s:
* Some pistons are listed with a range of compression ratio's. The low number is determined w/an un-cut deck and the high number is determined w/.030 piston to cylinder head clearance.
* Always check pistons to valve clearance - If using VTEC or like mechanisms- check w/longer duration higher lift lobe.
* Always run at least .030 piston to head clearance including gasket thickness.
* If piston appears to be different than expected, please do not hesitate to call Wiseco at 800-321-1364 to verify proper installation specifications.
 
 
 
 
 
 
 
 
 
 
 
 
 
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Email: info@ImportPerformanceParts.net

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*All prices on this site are subject to change without notice. Import Performance Parts™ disclaims responsibility for any printing or typographical errors, and does not guarantee that all information is accurate.

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