Yeah, i would go with the 4617. They are wider as well.

you will not want a wide washer. as it might hit the shock cap. the ball stud washers are probably a good diameter. I would assume the best size would be about the same width as the aluminum shock bushings.

they arent that thick

Plenty.

There will be constant questions about:

1) Springs. Still the springs. Which brand, what rate, mine are better, no they're not, ad nauseam.
2) Which offset spring cups you'll be using (I just threw up in my mouth a little thinking about the questions/answers/debates about this one)
3) The new hat bushings. They're great. They're crap. You have to sand 0.004 mm off the top. I hope so-and-so makes some for $18 a pair because that'll be way better. Blah blah blah blah blah
4) There aren't as good as/these are better than all the other BB shocks out there. Also, V2s are better. V1s are better.
5) The springs are rubbing! No they're not! What shims do I get, how do I shave the tower, is there a new tower, when is a new tower coming, I can't believe there's no new tower, these shims change the roll center or something...
6) I like the collars. I don't. Ghea collars are still better. Avid spring cups are better. No they're not. Ugh.
7) Please release some Proline black shock shafts so I can spend another seventy bucks! Please!! SHUT UP AND TAKE MY MONEY!!!
8) How do I anodize the blue parts on these things? I like gold. I don't. Mine are red. Blue is fast. Blue is slow.

And, of course:

9) When are the BB V2's coming out?

yeah, I looked at them again. The top one is probably closer, hard to tell with pics. Plus you get 1mm washers in case 3mm is better for you.

Omg haha!
Plus 1 on numbler 2! Barf
And the hat bushings. Barf

The problem is the top cap is bigger than the V2s. I only had to shave a little off the front B4.1 tower to prevent the Ghea collars from rubbing and nothing had to be done on the B44.1 towers. To do the same for these new shocks will require more material to be removed and/or the use of spacers. Most (if not all) the pictures I've seen of BBs on pro cars show mods to the tower(s). That tells me there is something they don't like about using the spacers. Either way, I'll wait and see what the masses experience.

Hello???? The washer goes on B4 the bushing does. The cap won't go past the upper bushing.

Better to break a tower than bend something metal IMO
Cost wise...$$

You want them wider due to force on your shock mount, which will now have more leverage than it did before. You want to transfer energy into the tower.*

the 4617 washer kit comes with 0.5mm, 1.0mm and 2.0mm washers.

I know.... point was if the washer is 1 inch wide, you gain nothing with a spacer. it will still hit.....lol

I agree there is a sweet spot between too narrow and too wide.

even better lol.

I like the Robinson aluminum "silent" pinions. They are only like $1-$2 more than standard ones.

I am confused as to why you would need to toss pinions and/or spurs away after so few runs ? If you mesh properly, have your gears covered, and inspect them each day you run and clean with an exacto blade or ultra fine sandpaper (if need be), they should last a very long time.

I agree, but I normally replace once the start making noise. I figure if they make noise they are wasting energy. Btw, it normally takes a few months for them to make noise in stock.