The use of these 3 7/8" bore pistons with stock 4" stroke enlarges the capacity of your Twin Cam engine from 88 to 95CI with the use of bored to size stock cylinders. Available with 9:1 or 9.5:1 compression ratio, which can be used with the stock ignition on both carburetor and EFI equipped models, or domed with 10.5:1 compression ratio, which requires the use of a High-Performance ignition system, such as our Dyna ignition ZPN730588. These Big Bore kits contain a pair of Wiseco forged pistons, a Hastings ring set, chrome wrist pins, circlips and a top end gasket kit. Ring sets are separately available.
Big Bore kit piston kits | ||||
Compr. | 9:1 | 9.5:1 | 10.5:1 | Bore Size |
Std. |
732719
7 979,64 kr
|
732764
7 979,64 kr
|
732709
7 599,59 kr
|
3.875" |
+.010" |
732721
7 979,64 kr
|
732766
7 599,59 kr
|
732711
7 599,59 kr
|
3.885" |
+.020" | - | - |
732712
7 599,59 kr
|
3.895" |
Piston ring sets for one piston | ||||
X-series rings fit Wiseco piston series 4678, 4688, 4916, 4917, 4957 and 4964. VM-series rings fit Wiseco piston series 4993, 4994, 4996, 4997, 4998 and 4999 | ||||
KX-Series | VM-Series | |||
- |
733875
615,88 kr
|
Std. 3 7/8" | ||
- |
733880
615,88 kr
|
+.005" | ||
- |
733885
615,88 kr
|
+.010" | ||
- |
733895
615,88 kr
|
+.020" | ||
720334
|
733905
|
+.030" |
Piston dome specification | |||||
All valve pocket specifications are measured from deck height | |||||
Comp. Ratio | Dome Volume | Intake Pocket | Exhaust Pocket | ||
Depth | Diameter | Depth | Diameter | ||
9:01 | -2CC | -.161" | 2.000" | -.158" | 2.000" |
9.5:1 | +4.6CC | -.183" | 2.000" | -183" | 2.000" |
10.5:1 | +15CC | -.161" | 2.000" | -.158" | 2.000" |
Recommended Retail Prices include 25.00% sales tax.
Prices exclude shipping, import duties and installation.
Prices are based on EUR to SEK 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.