


|
Product detailed specification |
|
|
Bore size |
86.00mm |
|
Stroke |
86.50mm |
|
MAHLE compression ratio (CR) |
12.9:1 |
|
OEM compression ratio (CR) |
11.7:1 |
|
Dome volume (CC) |
12cm3 |
|
Compression height (CH) |
30.00mm |
|
Pin diameter |
22mm |
|
Features |
4032 alloy |
|
Fits for |
Honda RSX-S - 2.0 (K20A/Z) |

|
Product detailed specification |
|
|
Bore size |
86.00mm |
|
Stroke |
86.00mm |
|
Wiseco compression ratio (CR) |
12.4:1 |
|
OEM compression ratio (CR) |
11.7:1 |
|
Dome volume (CC) |
10.5cm3 |
|
Compression height (CH) |
30.00mm |
|
Pin diameter |
22mm |
|
Features |
Most Wiseco pistons have offset pins. Pins must be offset same as OEM for quitest operation. |
|
Fits for |
Honda RSX-S - 2.0 (K20A/Z) |





| Sizes | STD, .025, .25 |
| Oil Clearance | Standard |
| Half Type | Upper & Lower |
| Material | Tri-Metal |
| Min. Std Shaft Size | 2.1646in / 54.98mm |
| Max. Std Shaft Size | 2.1654in / 55mm |
| Min. Std Tunnel Size | 2.3228in / 59mm |
| Max. Std Tunnel Size | 2.3236in / 59.02mm |
| Max Wall at Crown | 0.0788in / 2.002mm |
| Max Overall Length | 0.7874in / 20mm |
| Weight | 0.285 |
| Notes | 0 |

| NGINE BEARINGS | ||
![]() |
CON ROD BEARING SET |
|
| Part# | ||
| 4B1906H |
4B1906HX |
|
| Sizes | STD, 025, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material |
Tri-metal Hardened steel backs |
|
| Min Std Shaft Size |
1.7707in / 44.976mm |
|
| Max Std Shaft Size |
1.7717in / 45.000mm |
|
| Min Std Tunnel Size |
1.8898in / 48.000mm |
|
| Max Std Tunnel Size |
1.8907in / 48.024mm |
|
| Max Wall at Crown |
0.0591in / 1.502mm |
0.0586in / 1.489mm |
| Max Overall Length |
0.6102in / 15.50mm |
|
| Notes | ||
|
Diagram |
![]() |
|

| ENGINE BEARINGS | ||
![]() |
CON ROD BEARING SET |
|
| Part# | ||
| 4B1972H |
4B1972HX |
|
| Sizes | STD, 025, .25 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material |
Tri-metal Hardened steel backs |
|
| Min Std Shaft Size |
1.889in / 47.98mm |
|
| Max Std Shaft Size |
1.8898in / 48mm |
|
| Min Std Tunnel Size |
2.008in / 51.004mm |
|
| Max Std Tunnel Size |
2.0088in / 51.024mm |
|
| Max Wall at Crown |
0.0591in / 1.5mm |
0.0585in / 1.487mm |
| Max Overall Length |
0.6063in / 15.40mm |
|
| Notes | ||
|
Diagram |
![]() |
|

| Sizes | STD, .025, .25, .50 |
| Oil Clearance | Standard |
| Half Type | Identical Halves |
| Material | Tri-metal Hardened steel backs |
| Min. Std Shaft Size | 1.7707in / 44.976mm |
| Max. Std Shaft Size | 1.7717in / 45.000mm |
| Min. Std Tunnel Size | 1.8898in / 48.000mm |
| Max. Std Tunnel Size | 1.8907in / 48.024mm |
| Max Wall at Crown | 0.0591in / 1.502mm |
| Max Overall Length | 0.6102in / 15.50mm |
| Weight | 0.12 |
| Notes | 0 |