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jlv148 Added a reply to Anyone know mph on 450s 1st gear? Average...
8/3/2026 8:38pm 1st is half the ratio of 5th so should be about half the top speed assuming it's geared low enough that it can hit the red limiter in 5th. Otherwise more than half. 450 SX-F ratios according to Cycle News: 1st Gear: 16:32 ratio (2.000) 2nd Gear: 18:30 ratio (1.667) 3rd Gear: 20:28 ratio (1.400) 4th Gear: 22:26 ratio (1.182)...
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jlv148 Added a reply to Are rim lock and valve stem holes interchangeable?
7/30/2026 8:18pm What are you using for lube when you mount the tires?
jlv148 Added a reply to Suspension Valving question
5/22/2026 7:29pm Ask Race Tech! Their support is super helpful. I had a similar issue and if I remember correctly they told me I could substitute a slightly thicker shim and also offered to send more shims. The suspension was a huge improvement over stock!
jlv148 Added a reply to Suspension hydraulics (sort of) nerdology question...
7/28/2025 8:42pm Imagine you cut a hole with an area of 1/1000th of a square inch in the tank then put a piston in the hole with a 1 pound weight on it. The tank will be at 1000 PSI from that. Basically, since it's incompressible it takes no energy to raise it to any pressure you want. This is why they...
jlv148 Added a reply to Quick turn throttle for 2 stroke?
5/13/2025 8:02pm Not for sale but this was awesome! https://www.vitalmx.com/forums/tech-helprace-shop/shop-made-short-turn-…
jlv148 Added a reply to Shop made short-turn throttle
7/14/2024 7:45pm Nice job! I'd have killed for one of those on my 125! Is it noticeably harder to twist?
brocster Liked a reply to forum topic If you could go back in time and put a GoPro on any rider for any race, which would you pick?
5/4/2024 7:12pm
O’mara on the 125 at the Des Nations.
This forum topic has 106 replies.
davis224 Liked a reply to forum topic STARK FUTURE VARG - An Electric Bike that is Faster and Lighter than a 450?
12/4/2023 8:05pm
"There's too many stark threads!" *bumps a 2 year old thread to the front page*
This forum topic has 864 replies.
jlv148 Added a reply to Stark Orders and Payments
10/23/2023 5:52pm Looks like Michigan has a law against selling vehicles directly to customers: http://www.legislature.mi.gov/(S(gcjm2uja5thfqunklcsgd0bj))/mileg.aspx?page=GetObject&objectname=mcl-445-1574#:~:text=(i)%20Sell%20any%20new%20motor,or%20local%20government%20or%20agency.
jlv148 Added a reply to First (and second) Ride Report - Stark Varg
10/20/2023 7:03pm "7. Starts. It will be an absolute hole shot king in 80 hp. I plan on starting in 80 HP and racing in 40 HP. Because I race vet class with open displacement, my 125 really sucked as I got very poor starts and constantly had to battle through the pack. It can be frustrating if I can't make quick...
JMR1976 Liked a reply to forum topic Stark Orders and Payments
9/27/2023 6:58pm
Does anybody know if this guy has a mental illness?
This forum topic has 1589 replies.
theycallmeebryan Liked a reply to forum topic Stark Orders and Payments
9/14/2023 6:17pm
or simply clicked "Buy" before anyone else...
This forum topic has 1589 replies.
jlv148 Added a reply to CR80 Porting For Easy Horsepower
9/1/2023 6:29pm You might want to check out Eric Gorr's porting tips for that bike - https://www.eric-gorr.com/files/pdfs/model_tuning_tips_honda_cr.pdf
wrc777 Liked a reply to forum topic Did I just ruin my carb?
7/1/2023 7:26pm
Jb weld the pieces back on?
This forum topic has 12 replies.
mikedez Liked a reply to forum topic On track Alpinestar medical crew does nothing, spinal chord injury is serious
4/29/2023 6:37pm
I don’t know why the op is getting so much hate. They didn’t even put a neck brace on him. First thing I said when it showed the mule bumping all over the place with the guy holding his hands around coops neck was why the **** do they not have a neck brace or him on a backboard?
This forum topic has 154 replies.
jlv148 Added a reply to KX60 Pulls Hard when in Neutral. YouTube video added
4/23/2023 7:10pm Glad you solved it! Might have been a little hard on the bearing to tap it in with the shaft like that since it's driving it in by the inner race but I doubt it hurt it. I wouldn't worry about the liquid gasket.
jlv148 Added a reply to KX60 Pulls Hard when in Neutral. YouTube video added
4/22/2023 6:34pm You'll definitely need those bolts tight to keep it from leaking. I bet it'd act like that if one of the bearings isn't full seated in the case. I think you're getting close to finding the real problem now.
jlv148 Added a reply to Stark Varg - First Customer Review
4/17/2023 7:21pm Is it possible to just use the 80 HP mode for the start and then automatically drop down to something more sane for the rest of the race?
jlv148 Added a reply to KX60 Pulls Hard when in Neutral. YouTube video added
4/17/2023 7:16pm If you shifted through all the gears and it spun freely in each gear you don't have a stuck gear. Definitely a puzzle why neutral is dragging in that case. It's not the clutch though. With the clutch plates removed it'll obviously spin freely. But stuck clutch plates would make the clutch drag, it wouldn't make neutral drag. If you...
jlv148 Added a reply to KX60 Pulls Hard when in Neutral. YouTube video added
4/15/2023 7:35pm You haven't confirmed it isn't a transmission issue. In neutral it should spin freely regardless of the clutch engagement. My guess is if the clutch is fused together so are the gears in the transmission. So instead of only engaging when the dog clutches are engaged, they're partially fused to the main/counter shaft so they drag even when not in...