98 s1 wl hop up

[alstar2]

friend wants alittle more power,98 s1 WL thunder storm heads.thinking
cams, some head work,new exhaust system maybe up comp for cams.
it has a slip on pipe now &  a/c  thanks-- Al

[4DWUDS]

Might want to ask the boys over at www.badweatherbikers.com Go to the Old School section.

[mark61]

  Just adding the "race kit" supposed to help.  Air cleaner, muffler and ecm. Bought mine ('99 S3) with those already on it. Mechanics all commented on the improvement that has over stock.

mark61

[rigidthumper]

88" Axtell cylinders with NRHS stage 3 heads, Mik 45, & HQ0023 cams makes  a fun bike.
100# of torque in a light bike makes for some nice power wheelies.
If you need top end speed, then 10.5 CR + SE575s or Andrews NV and 11:1.

[EGNBLU]

I have a 97 S1 and went with the NRHS 1250 kit with stage 2 thunderstorm heads, mik 42, 10.5:1 Hurricane pistons, SE536 cams, dyna 2000 ignition and single fire coil. Still breaking it in, but it made a easy 100hp and 86 tq without tuning. Just jetting. Should make a few more after the motor loosens up a little. Power wheelies are easy in first and second. Probably will in third, not romping on it too much yet. Lots of fun.
Call Dan at NRHS and tell him what you are looking for, he is the man.

[xlfan]

Does anyone have the cam specs for the stock S1W cams? I believe they are different from the S1?

xlfan

[xlfan]

Rigid, isn't HQ0023 a EVO BT cam grind? Do you know if the SE 575 still is available? OEM Part number?

xlfan

[rigidthumper]

My bad. HQ-XL0043 is what I meant.
575s are 25740-05
Robin