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  1. Grizzly Engine & Transmission
    Just bought a used 2011 Grizzly 550 EPS 4WD. Previous owner installed a HMF Penland Pro series exhaust on it and the HMF optimizer. It is way too loud for me - I'm trying to do yard work and not annoy the neighbors or make my family deaf. It already has the "Quiet Core" baffle installed and it...
  2. Grizzly Engine & Transmission
    Hi all I'm struggling with hmf optimizer settings. Bike: 2017 grizzly 700 SE Mods: hmf qs slip on silencer, k&n airfilter, hmf optimizer, 27in zillas Milage: 560 ****Does anyone have same setup that could give me settings for 2017? Issues: 1. At times when I let off gas, the trans brake...
  3. Parts For Sale
    I have a HMF performance series pipe for sale and hmf optimizer I had them on my grizzly for about a month I have a new n2d snorkle kit NIB never installed would like to sell all of this make an offer I just want it out of my garage call or text 7127390049 snorkels are black not red like picture
  4. Parts For Sale
    I am selling my HMF Penland Pro & HMF Optimizer. This should work with the '09 and up 550's & 700's. Have about 55-60hrs on the pipe. It comes with a torque range modifier and spark arrestor which are already installed. You can remove them if you want. $300
  5. Parts For Sale
    I decided to sell the pipe along with it. See my other post HERE
  6. New Member Introductions
    hey im new here but im just wondering where i could get maybe a used hmf optimizer for grizzly 700 2011 if anyone has one or knows where to get one a little cheaper let me know
  7. Grizzly Talk
    hey everyone, what are some.of your favorite exhausts for the 550? I was thinking of getting HMF or possibly the ehs racing big 3 package. Are there any other exhausts and optimizers to consider? I like it loud, but not loud enough to annoy neighbors lol.
  8. Parts For Sale
    I have a used HMF optimizer. I bought it from another member but didn't end up needing it. All the wires and paperwork are there. I'm thinking $125 shipped. Make me an offer.
  9. Rage Customs
    Hey guys we have a newly used hmf optimizer for sale. Customer bought it at mud nats and decided that the hmf pipe he had purchased was too loud for his taste. Had it on his bike for less than 4 hrs. The pipe has already been sold but we still have the optimizer. Comes in original box with...
  10. Parts For Sale
    I have a HMF exhaust with brand new packing and fuel optimizer. Both came off my grizzly. The HMF has the quiet core. It is straight with no dents. The end cap has a few knicks in it from removing the end to repack it. The rubber grommet is torn a little but it still tightens down good and...
  11. Grizzly Dyno/Tuning
    I have installed the optimizer first tried the base setting hmf suggest which is 3,3,4 but it would smoke black when I rev it up. So I changed it to 1.5,1.5,2 and it still smokes but only at high rpm should I only change the red led's on the controller now since that's the full throttle setting...
  12. Grizzly Electrical & Lighting
    Just thought i would share with you folks that i have (3) hmf fuel programmers for the 550 grizzly and (5) for the 700 Rhino at a sale price of $182.00 shipped to your door. Good savings. :wow:
  13. Grizzly Engine & Transmission
    i have a 07 700 and want to put a exhaust on do i need the optimizer or will the pod mod do
1-13 of 13 Results