J.E. Forged Pistons & Rings

J.E. PistonsHigh Performance

Street Strip Race

RPM - RON'S PRECISION MACHINE, INC.
69 E. 580 N.
Santaquin, Utah 84655
1-801-754-5338 or Toll free 1-866-700-5877

Contact us anytime OR use your e-mail program and type in ron@rpmrons.com to send an e-mail with what you need

Order Form

Engine Rebuild Kit and Parts Online Catalog.

Engine Rebuild & Assembly Balancing &
Blueprinting Cylinder Heads

Engine Rebuild Kits Engine Start-up Other Related Web Sites Page 1

Crankshafts Degree Cam Other Related Web Sites Page 2

Purchase warranty & Return Information About the owner of RPM Frequently Asked Questions

MASTER ENGINE REBUILD KITS & PARTS

Home

BMW Forged Pistons & Rings

Call toll free to purchase at: 1-866-700-5877

BMW ------ CITROEN

'01-'06 BMW E46 M3, '01-'02 Z3, '06-'08 Z4 S54B32 3.2L 24V

Crown requires no deburring or preparation
2618 T6 high tensile forged aluminum
NEW ASYMMETRICAL FSR forging! State of the art asymmetrical skirt technology reduces friction and mass while providing a more rigid and durable platform.
In this environment, higher boost levels or heavy nitrous usage necessitate JE's wrought 2618 alloy.
FSR pistons include offset pins for quiet operation.
Pistons feature new Smooth Finished Crown process for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths
.827 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting, rings and wire locks included

'01 - '06 E46 M3, 01' - 02' Z3, 06' - 08' Z4 S54B32 3.2L 24V **Compression Ratio Assumes .025 Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

297115 $1,374.00
87.0
STD
91
139
32.3
33
9.0:1
-29.3
306
T, M
F
JG1006-3425 $220.84

297117 $1,374.00
87.0
STD
91
139
32.3
33
11.5:1
-13.2
330
V, M
F
JG1006-3425 $220.84

297119 $1,374.00
87.0
STD
91
139
32.3
33
12.5:1
-8.7
340
U, M
F
JG1006-3425 $220.84

297116 $1,374.00
87.5
0.50
91
139
32.3
33
9.0:1
-30
308
T, M
F
JG1006-3445 $220.82

297118 $1,374.00
87.5
0.50
91
139
32.3
33
11.5:1
-13.8
332
V, M
F
JG1006-3445 $220.82

297120 $1,374.00
87.5
0.50
91
139
32.3
33
12.5:1
-9.2
342
U, M
F
JG1006-3445 $220.82

Foot Notes:
F FSR (Forged Side Relief)
G Stock Block Must Be Re-Sleeved
L Limited Availability
M Made To Order
N Must sleeve block
R Full Round Skirt
T Accepts Turbo and Nitrous
U Not Designed for use with Turbo or Nitrous
V Accepts Nitrous

1995 M3 M50/S50B30US 3.0L 24V E36 22MM PIN

Crown requires no deburring or preparation
2618 T6 high tensile forged aluminum
NEW ASYMMETRICAL FSR forging! State of the art asymmetrical skirt technology reduces friction and mass while providing a more rigid and durable platform.
In this environment, higher boost levels or heavy nitrous usage necessitate JE's wrought 2618 alloy.
FSR pistons include offset pins for quiet operation.
Pistons feature new Smooth Finished Crown process for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths
.866 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting, rings and wire locks included

95 M3 M50/S50B30US 3.0L 24V E36 22MM PIN **Compression Ratio Assumes .069 Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

297179 $1,374.00
86.0
STD
85.8
135
32.8
32
9.0:1
-23.6
297
T, M
F
JG1006-3386 $220.84

297181 $1,374.00
86.0
STD
85.8
135
32.8
32
11.5:1
-8.8
300
V, M
F
JG1006-3386 $220.84

297183 $1,374.00
86.0
STD
85.8
135
32.8
32
12.5:1
-4.7
304
U, M
F
JG1006-3386 $220.84

361346 $1,374.00
86.25
0.25
85.8
135
32.8
32
9.0:1
-24.0
301
T
F
JG1006-3396

361347 $1,374.00
86.25
0.25
85.8
135
32.8
32
11.5:1
-9.0
301
V
F
JG1006-3396

361348 $1,374.00
86.25
0.25
85.8
135
32.8
32
12.5:1
-4.8
301
V
F
JG1006-3396

297180 $1,374.00
86.5
0.50
85.8
135
32.8
32
9.0:1
-24.2
299
T, M
F
JG1006-3405 $220.84

297182 $1,374.00
86.5
0.50
85.8
135
32.8
32
11.5:1
-9.3
302
V, M
F
JG1006-3405 $220.84

297184 $1,374.00
86.5
0.50
85.8
135
32.8
32
12.5:1
-5
305
U, M
F
JG1006-3405 $220.84

Foot Notes:
F FSR (Forged Side Relief)
G Stock Block Must Be Re-Sleeved
L Limited Availability
M Made To Order
N Must sleeve block
R Full Round Skirt
T Accepts Turbo and Nitrous
U Not Designed for use with Turbo or Nitrous
V Accepts Nitrous

1996-1999 M3 S52B32US 3.2L 24V E36 22MM PIN

Crown requires no deburring or preparation
2618 T6 high tensile forged aluminum
NEW ASYMMETRICAL FSR forging! State of the art asymmetrical skirt technology reduces friction and mass while providing a more rigid and durable platform.
In this environment, higher boost levels or heavy nitrous usage necessitate JE's wrought 2618 alloy.
FSR pistons include offset pins for quiet operation.
Pistons feature new Smooth Finished Crown process for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths
.866 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting, rings and wire locks included

1996 - 1999 M3 S52B32US 3.2L 24V E36 22MM PIN **Compression Ratio Assumes .069 Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

297170 $1,374.00
86.5
0.10
89.6
135
31
34
9.0:1
-25.1
285
T, M
F
JG1006-3405 $220.84

297172 $1,374.00
86.5
0.10
89.6
135
31
34
11.5:1
-9.4
291
V, M
F
JG1006-3405 $220.84

297174 $1,374.00
86.5
0.10
89.6
135
31
34
12.5:1
-5
295
U, M
F
JG1006-3405 $220.84

297171 $1,374.00
87.0
0.60
89.6
135
31
34
9.0:1
-25.8
287
T, M
F
JG1006-3425 $220.84

297173 $1,374.00
87.0
0.60
89.6
135
31
34
11.5:1
-9.9
294
V, M
F
JG1006-3425 $220.84

297175 $1,374.00
87.0
0.60
89.6
135
31
34
12.5:1
-5.5
297
U, M
F
JG1006-3425 $220.84

Foot Notes:
F FSR (Forged Side Relief)
G Stock Block Must Be Re-Sleeved
L Limited Availability
M Made To Order
N Must sleeve block
R Full Round Skirt
T Accepts Turbo and Nitrous
U Not Designed for use with Turbo or Nitrous
V Accepts Nitrous

BMW 2007-2013 N54B30

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths.
.866 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

BMW 2007-2013 N54B30 FSR Forging Note compression ratios calculated with .048 gasket. STD Bore: 84mm

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

338094 $1,374.00
84.0
STD
89.6
145
31.6
32
9.5:1
-21.3
307
T
F
JG1006-3307 $220.84

338095 $1,374.00
84.5
0.50
89.6
145
31.6
32
9.5:1
-22.0
310
T
F
JG1006-3327 $220.84

361360 $1,648.26
85.0
1.00
89.6
145
31.6
32
9.5:1
-22.7
312
T
F
JG1006-3346 $220.84

Foot Notes:
T Accepts Turbo and Nitrous

1992-1995 M3 S50B30 EURO 3.0L 24V E36 21MM PIN

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths.
.827 x 2.500 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

1992 - 1995 M3 S50B30 EURO 3.0L 24V E36 21MM PIN **Compression Ratio Assumes .069 Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

345622 $1,374.00
86.0
STD
85.8
142
31.62
32
9.0:1
-22.2
317
T
F
JG1006-3386 $220.84

345624 $1,374.00
86.0
STD
85.8
142
31.62
32
11.5:1
-7.3
329
V
F
JG1006-3386 $220.84

345626 $1,374.00
86.0
STD
85.8
142
31.62
32
12.5:1
-3.2
339
U
F
JG1006-3386 $220.84

361349 $1,374.00
86.25
0.25
85.8
142
31.62
32
9.0:1
-22.5
T
F
JG1006-3396

361350 $1,374.00
86.25
0.25
85.8
142
31.62
32
11.5:1
-7.5
V
F
JG1006-3396

361351 $1,374.00
86.25
0.25
85.8
142
31.62
32
12.5:1
-3.4
V
F
JG1006-3396

345623 $1,374.00
86.5
0.50
85.8
142
31.62
32
9.0:1
-22.8
321
T
F
JG1006-3405 $220.84

345625 $1,374.00
86.5
0.50
85.8
142
31.62
32
11.5:1
-7.8
333
V
F
JG1006-3405 $220.84

345627 $1,374.00
86.5
0.50
85.8
142
31.62
32
12.5:1
-3.6
343
U
F
JG1006-3405 $220.84

Foot Notes:
T Accepts Turbo and Nitrous
U Not Designed for use with Turbo or Nitrous
V Accepts Nitrous

1996-1999 M3 S50B32 EURO 3.2L 24V E36 21MM PIN

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths.
.827 x 2.500 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

Asymmetrical FSR 1996 - 1999 M3 S50B32 EURO 3.2L 24V E36 21MM PIN **Compression Ratio Assumes .069 Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

345628 $1,374.00
86.5
0.10
91
139
32.3
34
9.0:1
-25.4
323
T
F
JG1006-3405 $220.84

345630 $1,374.00
86.5
0.10
91
139
32.3
34
11.5:1
-9.6
330
V
F
JG1006-3405 $220.84

345632 $1,374.00
86.5
0.10
91
139
32.3
34
12.5:1
-5.2
336
U
F
JG1006-3405 $220.84

345629 $1,374.00
87.0
0.60
91
139
32.3
34
9.0:1
-26.0
328
T
F
JG1006-3425 $220.84

345631 $1,374.00
87.0
0.60
91
139
32.3
34
11.5:1
-10.1
336
V
F
JG1006-3425 $220.84

345633 $1,374.00
87.0
0.60
91
139
32.3
34
12.5:1
-5.7
340
U
F
JG1006-3425 $220.84

1996 - 1999 M3 S50B32 EURO 3.2L 24V E36 21MM PIN **Compression Ratio Assumes .069 Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

289074 $1,374.00
86.5
0.10
91
139
32.3
34
9.0:1
-25.4
323
T, M
R
JG1006-3405 $220.84

289076 $1,203.71
86.5
0.10
91
139
32.3
34
11.5:1
-9.6
330
V, M
R
JG1004-3405 $146.84

289078 $1,374.00
86.5
0.10
91
139
32.3
34
12.5:1
-5.2
336
U, M
R
JG1006-3405 $220.84

312383 $1,374.00
86.75
0.35
91
139
32.3
34
12.5:1
-5.4
339
U, M
R
JG1006-3425 $220.84

289075 $1,203.71
87.0
0.60
91
139
32.3
34
9.0:1
-26
328
T, M
R
JG1006-3425 $220.84

289077 $1,203.71
87.0
0.60
91
139
32.3
34
11.5:1
-10.1
336
V, M
R
JG1006-3425 $220.84

289079 $1,374.00
87.0
0.60
91
139
32.3
34
12.5:1
-5.7
340
U, M
R
JG1006-3425 $220.84

Foot Notes:
F FSR (Forged Side Relief)
G Stock Block Must Be Re-Sleeved
L Limited Availability
M Made To Order
N Must sleeve block
R Full Round Skirt
T Accepts Turbo and Nitrous
U Not Designed for use with Turbo or Nitrous
V Accepts Nitrous

BMW 1986-1990 M3 S14B23

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.2 x 2.8mm or 1.5, 1.5, 2.8mm ring widths.
.866 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

BMW 1986-1990 M3 S14B23 - FSR Series. Std Bore: 93.4mm Compression Ration Assumes .072" Gasket

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

321357 $916.37
93.6
0.20
84
144
32
42
8.5:1
-23.1
Call
T,M
F
J60004-3691 $84.31

321361 $916.37
93.6
0.20
84
144
32
42
13.0:1
5.8
Call
V,M
F
J60004-3691 $84.31

321358 $916.37
93.8
0.40
84
144
32
42
8.5:1
-23.4
Call
T,M
F
JG1004-3701 $146.84

321362 $916.37
93.8
0.40
84
144
32
42
13.0:1
5.6
Call
V,M
F
JG1004-3701 $146.84

321359 $916.37
94.0
0.60
84
144
32
42
8.5:1
-23.7
Call
T,M
F
JG1004-3701 $146.84

321363 $916.37
94.0
0.60
84
144
32
42
13.0:1
5.4
Call
V,M
F
JG1004-3701 $146.84

321360 $916.37
94.2
0.80
84
144
32
42
8.5:1
-24
Call
T,M
F
JG1004-3711 $146.84

321364 $916.37
94.2
0.80
84
144
32
42
13.0:1
5.2
Call
V,M
F
JG1004-3711 $146.84

Foot Notes:
T Accepts Turbo and Nitrous
V Accepts Nitrous

BMW 2009+ N55B30

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths.
.866 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

BMW 2009+ N55B30 : FSR Forging Note compression ratios calculated with .048 gasket. STD Bore: 84mm

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

338096 $1,689.95
84.0
STD
89.6
145
32.4
37
9.5:1
-14.7 -
T,M
F
JG1006-3307-AL

338097 $1,689.95
84.5
0.50
89.6
145
32.4
37
9.5:1
-14.7 -
T,M
F
JG1006-3327-AL

Foot Notes:
M Made To Order
T Accepts Turbo and Nitrous

CITROEN C2. VTS KIT CAR

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.2 x 2.8mm ring widths.
.708 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

CITROEN C2. VTS KIT CAR Std Bore: 78.5mm

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

312388 $916.37
78.7
0.20
82
133.5
32.1
Call
12.2:1
7.6
260
U
R
XC7900 $31.04

Foot Notes:
U Not Designed for use with Turbo or Nitrous

CITROEN SAXO VTS TU5J4

Dome/Dish requires no deburring or preparation
2618 T6 high tensile forged aluminum
JE designs are specifically engineered for extreme applications up. to, and including, professional competition. In this environment, the higher compression ratios, highest boost or heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy.
Dome and dishes feature smooth flowing radii for excellent flame travel.
1.0 x 1.0 x 2.0mm, 1.0 x 1.2 x 2.8mm, and 1.2 x 1.5 x 3.0mm ring widths.
.767 x 2.250 straight wall carbon steel wrist pin provided.
Pin fitting and wire locks included
Rings Now Included

CITROEN SAXO VTS TU5J4 Std Bore: 78.5mm .767" Pin Diameter

Part #
Your Cost
Bore
Over
size
Stroke
(mm)
Rod (mm)
C/D
(mm)
Head CC's
C/R With .040
Dome
CC's
Gram
Foot
note
Skirt
Included Ring Set#

312389 $916.37
78.5
STD
82
133.5
32.5
32.5
9.0:1
-15.4
266
M, T
R
JC3004-3091 $123.37

312390 $916.37
78.7
0.20
82
133.5
32.5
32.5
9.0:1
-15.4
266
M, T
R
XC7900 $31.04

312391 $916.37
79.0
0.50
82
133.5
32.5
32.5
9.0:1
-15.4
270
M, T
R
XC7900 $31.04

312392 $916.37
79.5
1.00
82
133.5
32.5
32.5
9.0:1
-15.4
274
M, T
R
XG7950 $29.76

312393 $916.37
80
1.50
82
133.5
32.5
32.5
9.0:1
-15.4
279
M, T
R
XC8000 $31.04

Foot Notes:
M Made To Order
T Accepts Turbo and Nitrous

Top of Page

HOME

Engine Rebuild & Assembly	Balancing & Blueprinting	Cylinder Heads
Engine Rebuild Kits	Engine Start-up	Other Related Web Sites Page 1
Crankshafts	Degree Cam	Other Related Web Sites Page 2
Purchase warranty & Return Information	About the owner of RPM	Frequently Asked Questions
MASTER ENGINE REBUILD KITS & PARTS

Part # Your Cost	Bore	Over size	Stroke (mm)	Rod (mm)	C/D (mm)	Head CC's	C/R With .040	Dome CC's	Gram	Foot note	Skirt	Included Ring Set#
297115 $1,374.00	87.0	STD	91	139	32.3	33	9.0:1	-29.3	306	T, M	F	JG1006-3425 $220.84
297117 $1,374.00	87.0	STD	91	139	32.3	33	11.5:1	-13.2	330	V, M	F	JG1006-3425 $220.84
297119 $1,374.00	87.0	STD	91	139	32.3	33	12.5:1	-8.7	340	U, M	F	JG1006-3425 $220.84
297116 $1,374.00	87.5	0.50	91	139	32.3	33	9.0:1	-30	308	T, M	F	JG1006-3445 $220.82
297118 $1,374.00	87.5	0.50	91	139	32.3	33	11.5:1	-13.8	332	V, M	F	JG1006-3445 $220.82
297120 $1,374.00	87.5	0.50	91	139	32.3	33	12.5:1	-9.2	342	U, M	F	JG1006-3445 $220.82