C5 LLC

C5 LLC Performance Products We design and manufacture vehicle performance parts.

Rolling through orders and appreciating all the positive feedback. Can you believe it's SEPTEMBER already?!?
09/03/2026

Rolling through orders and appreciating all the positive feedback. Can you believe it's SEPTEMBER already?!?

It's that time when calls come in hot and steady. I'm trying to keep up but if you want a header before November, I've g...
09/02/2026

It's that time when calls come in hot and steady. I'm trying to keep up but if you want a header before November, I've got to order parts now. Same goes with ignitions.

Deb and I are going a a vacation in October for a few weeks.

Give me a call 920.810.0946 to confirm and we'll be ordering parts very soon. I will try filling these orders before mid October.

Thank you 😊

Final piece of the puzzle was 60 sheets of roofing cut to 11 & 19 feet, then loaded in 87 degree heat. Mother Nature is ...
09/02/2026

Final piece of the puzzle was 60 sheets of roofing cut to 11 & 19 feet, then loaded in 87 degree heat. Mother Nature is doing her best to kill me but we have customers who need parts!

Stay cool my friends!

When someone goes out of their way to discourage others from upgrading engine management, there is only one reason.It te...
08/26/2026

When someone goes out of their way to discourage others from upgrading engine management, there is only one reason.

It terrifies them.

Not $$, not the actual function, just fear. Every vehicle you drive to work uses this technology. It's ok to admit this looks wild. I'm 59 years old and self taught. If I can do it, so can you. Plus we have 7 day a week support. Have a blessed day my friends 🧡

In between headers, we build ignitions. Darn good ones, really good, ah hell... FANTASTIC ignitions baby!!AMERICAN MADE ...
08/25/2026

In between headers, we build ignitions. Darn good ones, really good, ah hell... FANTASTIC ignitions baby!!

AMERICAN MADE with crazy speed, precision, repeatability, and usable features that help you WIN more and suck less.

Enjoy your day everyone!

With pulling season winding down, orders go up. The weather was finally nice and I really accomplished a great deal of r...
08/23/2026

With pulling season winding down, orders go up. The weather was finally nice and I really accomplished a great deal of roof building.
It will be SO nice to be dry and comfortable very soon.

Facebook does a poor job for communicating with business followers. You are always better off asking me questions on my personal messenger or text/call 920.810.0946

I will be ordering more header plates this week and assembling ignition drives. Please don't wait until you need something asap... we work nonstop but never get caught up. October we will shut down for two weeks and enjoy a much needed VACATION.

We appreciate everyone who has ordered or asked about our technology. You keep us excited about the future!!!

Farmall W9 aka Fat Betty (my nickname for Wheatland tractors) ... is on our short list. I'm building several intake-exha...
08/21/2026

Farmall W9 aka Fat Betty (my nickname for Wheatland tractors) ... is on our short list. I'm building several intake-exhaust systems along with ignitions for these beautiful machines.

The W9 uses a distributor that runs opposite rotation from the H and M based engines. We don't care because our trigger design can run in either direction!

If you know anyone with a W9, please let them know we are making kits slated for September-October. The intake-exhaust are $1300 including our port matched gaskets.

The ignition systems start at $2100 complete (ECU, coils, wires, trigger and reluctor assembly) pretty much plug and play. These American made ignitions include data logging and diagnostic scanner built in. Options include touch screen waterproof display and O2 sensor controller via CAN Bus.

Sensor and relay management along with load based timing options make this one of the most powerful engine management tools available. The data logging alone is worth the price.

As you know, we build every header specific to the engine so shipping dates will vary depending on the volume of orders we get. Give us a call to ask questions or reserve one. Cell 920.810.0946

Plenty of trips to UPS lately. If you have asked about a header lately but haven't received an official order confirmati...
08/20/2026

Plenty of trips to UPS lately. If you have asked about a header lately but haven't received an official order confirmation, give me a call 920.810.0946 so we can start.

Same goes with ignitions.... I'm doing my best to keep up with requests and questions. Let's goooo 😆

14 years of steady development here at the C5 Performance world headquarters. We never stop working 💪 and I'm excited to...
08/19/2026

14 years of steady development here at the C5 Performance world headquarters. We never stop working 💪 and I'm excited to ship our first production Massey 44 with matched gaskets.

Address

N1269 Shaky Lake Road
Fremont, WI
54940

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 4pm

Telephone

+19208100946

Website

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