KPMI 5/16" Installation Protectors - 2-Pack for Harley Evolution & Ironhead
About KPMI
Kibblewhite Precision Machining supplies valves, valve springs, guides and complete top-end kits used by professional V-twin engine builders. Its black diamond valves and spring kits are a standard specification on high-lift cam builds.
KPMI Installation Protectors are crucial for safeguarding your engine's integrity during assembly. These plastic guards slip over 5/16" studs and bolts, preventing thread damage and unsightly marring on engine cases.
Why riders pick this
- Slips over 5/16" studs and bolts
- Protects engine case and threads from damage
- Essential for Evo and Ironhead engine assembly
- Reusable plastic construction
- Comes in a convenient 2-pack
When you're wrenching on your Harley, protecting critical components is paramount. These KPMI Installation Protectors are engineered to shield your engine case and bolt threads from accidental damage. Perfect for engine builds or routine maintenance, they ensure a clean assembly process without costly cosmetic or functional damage.
Protect Your Investment
- Designed to slip over 5/16" studs and bolts
- Prevents thread damage during installation and removal
- Protects engine cases and surrounding surfaces from scratches and marring
- Durable plastic construction for repeated use
Essential for Evolution and Ironhead Builds
These 2-pack protectors are specifically tailored for Evolution and Ironhead V-twin engines. Whether you're doing a top-end rebuild or simply swapping out components, these guards offer peace of mind, allowing you to focus on the task without worrying about accidental slips or impacts. Keep your build looking factory-fresh and functioning flawlessly.
Specifications
- Brand: KPMI
- Manufacturer Part #: 20-20634
- Quantity: 2 per pack
- Length: 5.13 in
- Width: 3.5 in
- Height: 0.65 in
- Weight: 0.01 lbs
Common questions
What size bolts do these protectors fit?
These KPMI protectors are designed for 5/16" studs and bolts. Always confirm your fastener size to ensure proper fitment.
Are these protectors reusable?
Yes, these plastic guards are designed for repeated use across multiple service intervals, offering long-term protection for your V-twin projects.
Will these work on Milwaukee-Eight or Twin Cam engines?
No, these particular protectors are engineered for Evolution and Ironhead engines only. Different engine platforms may require different sizes.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | KPMI |
| TYPE | Tools |
| SKU | 191-37042 |
| WEIGHT | 0.01 lb |
