The 98c has multiple upgrades. Including a x-chamber, rocket cock, nitro system, flatline barrel, RT kits, full auto kit, and electronic kits.

INSTALLATION: The first thing you do to install the double trigger is remove the front half of the marker. After that you just slide out the old trigger and guard and then slides the new one in. You do this just by taking out the old pins and then putting them back in over the double trigger. The 98c already has a place for the double trigger guard. This is were I ran into my first problem. The guard would not fit since the rubber grip has no cut for the double trigger guard! It was not a huge problem, I just took my trusty exact-of-knife and made about a centimeter cut in it. This worked farley good. I was a little excited though so I recommend you take your time during this part so it doesn't look that sketchy.

Performance: The double trigger allowed me to pump out a little more paint then I could with single trigger. Mostly I just think it is appearance more than the lighter trigger pull, but hey whatever works for you.

I rate this product a 6 out of 10.
I suggest you try one, they are cheap and a easy upgrade.