I always found the standard Rush geometry a little nose down for my liking. I loved the way the bike went up hill, but found it a bit nervous downhill.
I also never got on too well with the damping in the DLR2 lefty - even playing with the oil weights and shim stacks, I couldn't get the bump performance I wanted without excessive bob.
I noticed that quite a few of the 2008 Rush models in Europe have 'standard' 120mm forks, which have an axel to crown hight of around 500mm (compared to the DLR2's 480mm).
So, I replaced the DLR2 with a MAX SPV (I have some Manitou Minutes with SPV and like it). I reduced the travel down to 130mm with a 10mm spacer, giving a 500mm axel to crown height (the 130mm travel also matches better the 120mm I have out back since changing for a 190x50mm RP3).
Well, as you might guess, the bike is not quite so good on steep uphill - the front end wanders a bit more and traction is not so good and you need to keep your weight a litttle further forward to keep the front down.
But, wow! The bike is so much better downhill: much more stable, better weight distribution, easier to manual. And, the fork damper works properly, absorbing big rocks without wallowing around. Sweet!
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: Lefty MAX on Rush