- Pistons are Manufactured on 4032 High Silicone material forgings that are excellent for street and strip applications.
- CNC Precision machined ring grooves for 1.5, 1.5, 3.0 rings.
- Top ring land gas distribution grrove to enhance performance and improve ring seal.
- 927-2700-51-15C wrist pins (130 Grams), pin fitting, wire locks, broached pin oilers, and accumulator groove are included.
- Diamond turned skirts.
- Forged side relief with external lightening cavities where available.
- American made.
Cubic Inch |
Bore Size |
Over Size |
Stroke |
Rod Length |
Comp. Height |
58cc |
64cc |
70cc |
Dome Volume |
Gram Weight |
Foot Notes |
Piston Part Number |
Street Ring Set |
400 |
4.125 |
STD |
3.750 |
5.565 |
1.560 |
14.1 |
13.0 |
12.0 |
4.8 |
Call |
S |
1000218 |
AT 4125 |
405 |
4.145 |
0.020 |
3.750 |
5.565 |
1.560 |
14.1 |
13.0 |
12.0 |
4.2 |
Call |
S |
1000219 |
AT 4145 |
407 |
4.155 |
0.030 |
3.750 |
5.565 |
1.560 |
14.1 |
13.0 |
12.0 |
3.8 |
Call |
S |
1000220 |
AT 4155 |
409 |
4.165 |
0.040 |
3.750 |
5.565 |
1.560 |
14.1 |
13.0 |
12.0 |
3.5 |
Call |
S |
1000221 |
AT 4165 |
372 |
4.125 |
STD |
3.480 |
6.000 |
1.250 |
13.6 |
12.5 |
11.5 |
7.0 |
Call |
S |
1000222 |
AT 4125 |
375 |
4.145 |
0.020 |
3.480 |
6.000 |
1.250 |
13.6 |
12.5 |
11.6 |
6.4 |
Call |
s |
1000223 |
AT 4145 |
377 |
4.155 |
0.030 |
3.480 |
6.000 |
1.250 |
13.6 |
12.5 |
11.6 |
6.0 |
Call |
S |
1000224 |
AT 4155 |
379 |
4.165 |
0.040 |
3.480 |
6.000 |
1.250 |
13.6 |
12.5 |
11.6 |
5.7 |
Call |
S |
1000225 |
AT 4165 |
400 |
4.125 |
STD |
3.750 |
5.700 |
1.425 |
14.1 |
13.0 |
12.0 |
4.8 |
Call |
-- |
1000226 |
AT 4125 |
405 |
4.145 |
0.020 |
3.750 |
5.700 |
1.425 |
14.1 |
13.0 |
12.0 |
4.2 |
Call |
-- |
1000227 |
AT 4145 |
407 |
4.155 |
0.030 |
3.750 |
5.700 |
1.425 |
14.1 |
13.0 |
12.0 |
3.8 |
Call |
-- |
1000228 |
AT 4155 |
409 |
4.165 |
0.040 |
3.750 |
5.700 |
1.425 |
14.1 |
13.0 |
12.0 |
3.5 |
Call |
-- |
1000229 |
AT 4165 |
400 |
4.125 |
STD |
3.750 |
6.000 |
1.125 |
14.1 |
13.0 |
12.0 |
4.8 |
Call |
R |
1000230 |
AT 4125 |
405 |
4.145 |
0.020 |
3.750 |
6.000 |
1.125 |
14.1 |
13.0 |
12.0 |
4.2 |
Call |
R |
1000231 |
AT 4145 |
407 |
4.155 |
0.030 |
3.750 |
6.000 |
1.125 |
14.1 |
13.0 |
12.0 |
3.8 |
Call |
R |
1000232 |
AT 4155 |
409 |
4.165 |
0.040 |
3.750 |
6.000 |
1.125 |
14.1 |
13.0 |
12.0 |
3.5 |
Call |
R |
1000233 |
AT 4165 |
414 |
4.125 |
STD |
3.875 |
6.000 |
1.060 |
14.1 |
13.0 |
12.1 |
2.6 |
Call |
R |
1000234 |
AT 4125 |
418 |
4.145 |
0.020 |
3.875 |
6.000 |
1.060 |
14.1 |
13.0 |
12.1 |
1.9 |
Call |
R |
1000235 |
AT 4145 |
420 |
4.155 |
0.030 |
3.875 |
6.000 |
1.060 |
14.1 |
13.0 |
12.1 |
1.5 |
Call |
R |
1000236 |
AT 4155 |
428 |
4.125 |
STD |
4.000 |
6.000 |
1.000 |
14.1 |
13.0 |
12.1 |
0.3 |
Call |
R |
1000237 |
AT 4125 |
432 |
4.145 |
0.020 |
4.000 |
6.000 |
1.000 |
14.1 |
13.0 |
12.1 |
-0.4 |
Call |
R |
1000238 |
AT 4145 |
434 |
4.155 |
0.030 |
4.000 |
6.000 |
1.000 |
14.1 |
13.0 |
12.1 |
-0.8 |
Call |
R |
1000239 |
AT 4155 |
436 |
4.165 |
0.040 |
4.000 |
6.000 |
1.000 |
14.1 |
13.0 |
12.1 |
-1.1 |
Call |
R |
1000240 |
AT 416 |
|