are you talking about your shifter knob? or the whole shifter? if it the knob there is a set screw you need to undo and it should come off! if it the whole shifter here is a how for you! On late models you'll need to remove the shift knob, console cover, and upperboot. There is also a lowerboot attached with four hex-head screws, which can be tricky to get to. You don't need to drain the trans fluid to change the shifter. Start by removing the four 13mm bolts which secure the stock shifter to the transmission.
With the bolts out, use a screwdriver to pry the stock shifter off the case.
You can see the difference in construction between the Ripper and the stock shifters. The stock shifter base is stamped steel and will flex under heavy force. The Ripper uses an all billet aluminum design. The stick itself is stainless steel.
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Inspect the small plastic shifter cup. If it is in good shape (they usually are), it can be reused. Otherwise you'll need to round up a replacement, from Ford or a transmission shop.
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Scrape off the old silicone, and apply a bead of new silicone sealant or RTV.
Carefully place the new shifter onto the case, making sure that the shifter ball seats into the plastic cup. The new shifter comes with offset washers which allow you to position the shifter 1/2" fore or aft, based on your preference. Install and tighten the supplied allen head bolts.
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The shifter stops are an important feature of T5 aftermarket shifters. They will prevent overtravel of the shifter when your slamming the gears. One big problem with the stock shifter is that if bang the gear hard enough you can damage the internals and bend the shift forks. Set the stops by putting the shifter in third and turning the allen screw until it just touches the stick, then back it of half turn. Repeat for the lower stop with the shifter in fourth gear.
While holding the allen screw in place, snug up the lock nut. Go ahead and shift through all the gears and make sure all the bolts are nice and tight.
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The final step is to slip on the supplied boot and retaining ring. You're now ready to slam the gears with confidence! The B&M Ripper definitely changes the feel and action of shifting. The throws are shorter and thus faster. The shifter also offers more positive "cluncks" when engaging gears, without the sloppy feel and play in the stock shifter. hope this helps you !James