Newly designed high-compression piston kits for Evolution engines. Wiseco forged pistons are well-known for their superior strength over stock cast pistons and can be set-up at .0025" to .0035" clearance for quieter operation. Compression ratio listed is with stock stroke. Each kit includes 2 pistons with rings, pins and clips.
Sportster thru 2003 | Evolution Big Twin | |||
Dome | 1 | 2 | 3 | 4 |
XL1200 | XL1200 | 1340 | 1340 | |
9:1 | 10.5:1 | 8.5:1 | 10:1 | |
Size | Compr. | Compr. | Compr. | Compr. |
Std. |
730049
£336.47
|
238789
£353.30
|
235285
£331.19
|
730054
£353.30
|
+.005" | - |
238792
£336.47
|
- |
730055
£336.47
|
+.010" |
730050
£353.30
|
238790
£336.47
|
235286
£331.19
|
730056
£353.30
|
+.020" |
730051
£336.47
|
238791
£336.47
|
235287
£331.19
|
730057
£353.30
|
+.030" | - | - |
235288
£331.19
|
730058
£336.47
|
+.040" | - |
238793
£336.47
|
235289
£331.19
|
730059
£353.30
|
Piston dome specifications | |||||
All valve pocket specifications are measured from deck height | |||||
Dome Style | Dome Volume | Intake Pocket | Exhaust Pocket | ||
Depth | Diameter | Depth | Diameter | ||
1 | -2.8 cc | -.214" | 2.100" | -.214" | 2.100" |
2 | +6.0 cc | -.225" | 2.100" | -.225" | 2.100" |
3 | -1.5 cc | -.178" | 2.000" | -.178" | 2.000" |
4 | +12.9 cc | -.143" | 2.080" | -.138" | 1.740" |
5 | +19.0 cc | -.165" | 2.080" | -.165" | 2.080" |
Recommended Retail Prices include 20.00% sales tax.
Prices exclude shipping, import duties and installation.
Prices are based on EUR to GBP interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.