2017-2022 Harley Milwaukee Eight 124 ci, 4.180" bore, 4.500" stroke, 11:1 CR 1.080" CH -3.9 dome cc
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2017-2022 Harley Milwaukee Eight 124 ci, 4.180" bore, 4.500" stroke, 11:1 CR 1.080" CH -3.9 dome cc
|
Make |
Harley Davidson |
|
Engine Size |
124 CI |
|
Model |
Milwaukee 8 2017-2022 |
|
Bore (in) |
4.18 |
|
Stroke (in) |
4.5 |
|
Comp Ratio |
11.0:1 |
|
Dome CC |
-3.9 |
|
Comp Height |
1.08 |
|
Piston Part Number |
BHM8124-3.9 |
|
Conrod Part Nmber |
PSR10087 |
|
Pint Part Number |
927-2250-18CP1C |
|
Locks Part Number |
927x073 SWL |
|
Rings |
1-MG10-4180 2-MS20-4180-THG 3-M38-4180 |
|
Shelf (RPO) or Made to Order (MTO) |
ROP |
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 124 ci, 4.180" bore, 4.500" stroke, 11:1 CR 1.080" CH -3.9 dome cc |
|---|---|
| Brands | CP Carrillo |
Delivery & Freight
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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 is the recommended bore clearance for the BHM8124-3.9 pistons?
For the BHM8124-3.9 pistons, a typical bore clearance of 0.0025" to 0.0030" is recommended. However, this can vary based on the specific application and engine builder preferences, so always consult your machinist.
What type of rings are included with the BHM8124-3.9 piston kit?
The BHM8124-3.9 piston kit includes a set of three rings: 1-MG10-4180 (top ring), 2-MS20-4180-THG (second ring), and 3-M38-4180 (oil ring). Ensure proper installation and gap settings as per your engine's requirements.
What is the compression ratio of the BHM8124-3.9 pistons?
The BHM8124-3.9 pistons have a compression ratio of 11.0:1. This ratio is suitable for performance applications but requires careful tuning and fuel quality to ensure reliability.
What material are the BHM8124-3.9 pistons made from?
The BHM8124-3.9 pistons are forged from high-strength 2618 alloy, which provides excellent durability and performance characteristics, making them suitable for high-performance applications.
How are the BHM8124-3.9 pistons balanced?
The BHM8124-3.9 pistons are balanced to within +/- 1 gram, which helps ensure smooth operation and reduces vibrations in high-performance applications. Always balance the complete rotating assembly for optimal performance.
