400 SMALL BLOCK 18º DOME
These pistons feature our newer dome profile to match a wider variety of 18º heads. Designed to fit your high-compression, high horsepower 17º/18º dirt late model engine, these pistons have smooth flowing domes for optimum flame travel and angle milled head compatibility. New valve reliefs will accommodate larger valves and long duration, tight lobe separation cams. These pistons utilize dedicated left and right hand forgings and accept 1/16, 1/16, 3/16 rings. Will not fit Brodix 18x cylinder heads.
Includes:
Pin #927-2750-15-51S (130g)
Contact reduction grooves
Heavy Duty single .073 spiro lock (#927-073-AS)
Double pin oilers
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400 Series
Std Bore: 4.125
Ring package designed for: 1/16, 1/16, 3/16 Rings
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| Part # |
CID |
Bore |
Stroke |
Rod
Lgth. |
Block
Ht. |
Comp.
Ht. |
| Head Cubic Centimeters |
| 52cc |
55cc |
58cc |
| Compression Ratio |
|
Dome
Vol. |
Gram
Wt. |
Footnote |
Oversize |
Recom.
Ring Set |
 |
| 213103 |
400 |
4.125 |
4.000 |
6.000 |
9.000 |
1.000 |
15.9 |
15.2 |
14.5 |
2.5 |
441 |
S,B |
STD |
J10008-4125-5 |
|
| 213104 |
429 |
4.130 |
4.000 |
6.000 |
9.000 |
1.000 |
15.9 |
15.2 |
14.5 |
2.5 |
440 |
S,B |
0.005 |
J10008-4130-5 |
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| 213105 |
430 |
4.135 |
4.000 |
6.000 |
9.000 |
1.000 |
15.9 |
15.2 |
14.5 |
2.5 |
434 |
S,B,M |
0.010 |
J10008-4135-5 |
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| 213106 |
432 |
4.145 |
4.000 |
6.000 |
9.000 |
1.000 |
16.0 |
15.3 |
14.6 |
2.5 |
443 |
S,B |
0.020 |
J10008-4145-5 |
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| 213107 |
434 |
4.155 |
4.000 |
6.000 |
9.000 |
1.000 |
16.0 |
15.3 |
14.6 |
2.5 |
445 |
S,B |
0.030 |
J10008-4155-5 |
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| 213108 |
434 |
4.165 |
4.000 |
6.000 |
9.000 |
1.000 |
16.1 |
15.4 |
14.7 |
2.5 |
450 |
S,B |
0.040 |
J10008-4165-5 |
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| 213109 |
414 |
4.125 |
3.875 |
6.000 |
9.000 |
1.062 |
15.4 |
14.7 |
14.1 |
2.5 |
450 |
S,B |
STD |
J10008-4125-5 |
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| 213110 |
416 |
4.135 |
3.875 |
6.000 |
9.000 |
1.062 |
15.4 |
14.7 |
14.1 |
2.5 |
452 |
S,B |
0.010 |
J10008-4135-5 |
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| 213111 |
418 |
4.145 |
3.875 |
6.000 |
9.000 |
1.062 |
15.4 |
14.7 |
14.1 |
2.5 |
460 |
S,B |
0.020 |
J10008-4145-5 |
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| 213112 |
420 |
4.155 |
3.875 |
6.000 |
9.000 |
1.062 |
15.6 |
14.9 |
14.2 |
2.5 |
463 |
S,B |
0.030 |
J10008-4155-5 |
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| 213113 |
406 |
4.125 |
3.800 |
6.000 |
9.000 |
1.100 |
15.1 |
14.4 |
13.8 |
2.5 |
455 |
S,B,M |
STD |
J10008-4125-5 |
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| 213116 |
410 |
4.145 |
3.800 |
6.000 |
9.000 |
1.100 |
15.1 |
14.4 |
13.8 |
2.5 |
466 |
S,B,M |
0.020 |
J10008-4145-5 |
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| 213117 |
412 |
4.155 |
3.800 |
6.000 |
9.000 |
1.100 |
15.3 |
14.6 |
14.0 |
2.5 |
470 |
S,B,M |
0.030 |
J10008-4155-5 |
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| 213118 |
401 |
4.125 |
3.750 |
6.000 |
9.000 |
1.125 |
14.9 |
14.3 |
13.7 |
2.5 |
463 |
S,B |
STD |
J10008-4125-5 |
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| 213119 |
402 |
4.130 |
3.750 |
6.000 |
9.000 |
1.125 |
14.9 |
14.3 |
13.7 |
2.5 |
461 |
S,B,M |
0.005 |
J10008-4130-5 |
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| 213120 |
403 |
4.135 |
3.750 |
6.000 |
9.000 |
1.125 |
14.9 |
14.3 |
13.7 |
2.5 |
464 |
S,B |
0.010 |
J10008-4135-5 |
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| 213121 |
405 |
4.145 |
3.750 |
6.000 |
9.000 |
1.125 |
15.1 |
14.4 |
13.8 |
2.5 |
469 |
S,B |
0.020 |
J10008-4145-5 |
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| 213122 |
407 |
4.155 |
3.750 |
6.000 |
9.000 |
1.125 |
15.1 |
14.4 |
13.8 |
2.5 |
478 |
S,B |
0.030 |
J10008-4155-5 |
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| 213123 |
409 |
4.165 |
3.750 |
6.000 |
9.000 |
1.125 |
15.2 |
14.5 |
13.9 |
2.5 |
479 |
S,B |
0.040 |
J10008-4165-5 |
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| 213124 |
387 |
4.125 |
3.625 |
6.000 |
9.000 |
1.187 |
14.5 |
13.9 |
13.3 |
2.5 |
468 |
S,B,M |
STD |
J10008-4125-5 |
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| 213125 |
388 |
4.130 |
3.625 |
6.000 |
9.000 |
1.187 |
14.5 |
13.9 |
13.3 |
2.5 |
470 |
S,B,M |
0.005 |
J10008-4130-5 |
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| 213127 |
374 |
4.125 |
3.500 |
6.000 |
9.000 |
1.250 |
14.3 |
13.6 |
13.1 |
3.5 |
487 |
S |
STD |
J10008-4125-5 |
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| 213128 |
375 |
4.130 |
3.500 |
6.000 |
9.000 |
1.250 |
14.3 |
13.6 |
13.1 |
3.5 |
490 |
M,S |
0.005 |
J10008-4130-5 |
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| 213129 |
376 |
4.135 |
3.500 |
6.000 |
9.000 |
1.250 |
14.3 |
13.6 |
13.1 |
3.5 |
492 |
M,S |
0.010 |
J10008-4135-5 |
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Tech and Installation Tips
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Valve Relief Diagram
- Denotes part # has been issued a new part #. A list referencing old part #s to their new counterparts will be available shortly.