2017-2022 Harley Milwaukee Eight 107 cu in, 3.937 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H, 8.7 dome cc’s
Please allow up to 2 weeks for delivery. If it is any longer, we will contact you.
Feel free to contact us to confirm delivery time before you order.
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
2017-2022 Harley Milwaukee Eight 107 cu in, 3.937 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H, 8.7 dome cc’s
|
Make |
Harley Davidson |
|
Engine Size |
107 CI |
|
Model |
Milwaukee 8 2017-2022 |
|
Bore (in) |
3.937 |
|
Stroke (in) |
4.375 |
|
Comp Ratio |
11.0:1 |
|
Dome CC |
8.7 |
|
Comp Height |
1.143 |
|
Piston Part Number |
BHM8107-9 |
|
Conrod Part Nmber |
PSR10087 |
|
Pint Part Number |
927-2500-20CP1C |
|
Locks Part Number |
927x073 SWL |
|
Rings |
CPN-3937 |
|
Shelf (RPO) or Made to Order (MTO) |
MTO |
Proudly made in the USA by CP Carrillo Pistons!
- Fully CNC machined
- Balanced to +/- 1 gram
- Double forced pin oilers
- Forged from high strength 2618 alloy
- Designed for maximum performance, horsepower and reliability
- Complete kit includes two pistons, ring sets, wrist pins and clips
- Follow ring end gap and piston to cylinder clearances as per the supplied instructions
| Product Name | 2017-2022 Harley Milwaukee Eight 107 cu in, 3.937 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H, 8.7 dome cc’s |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What are the recommended clearances for the BHM8107-9 pistons?
For the BHM8107-9 pistons, it's crucial to follow the manufacturer's guidelines for piston-to-cylinder clearance. Typically, a clearance of 0.0035" to 0.0045" is recommended for forged pistons, but this can vary based on your specific build and application. Always consult your engine builder for precise measurements.
What type of rings are included with the BHM8107-9 piston kit?
The BHM8107-9 piston kit includes CP rings, specifically part number CPN-3937. Ensure you follow the manufacturer's specifications for ring gap settings to achieve optimal performance and reliability.
What is the compression ratio of the BHM8107-9 pistons and how does it affect performance?
The BHM8107-9 pistons have a compression ratio of 11.0:1. This higher compression ratio can enhance performance by improving thermal efficiency and power output. However, it requires careful tuning and high-quality fuel to avoid knock and ensure reliability.
What material are the BHM8107-9 pistons made from?
The BHM8107-9 pistons are forged from high-strength 2618 alloy, which provides excellent durability and performance under high-stress conditions. This material is well-suited for applications requiring increased horsepower and reliability.
Can the BHM8107-9 pistons be used in a stock Harley Milwaukee Eight engine?
Yes, the BHM8107-9 pistons can be used in a stock Harley Milwaukee Eight engine, but modifications may be necessary to accommodate the higher compression ratio. It's essential to ensure proper tuning and check for any clearance issues with existing components.
