Anyone do stage IV on 2021?

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Feb 28, 2021 | 07:07 AM

Viper

Thread Starter

Cruiser

Joined: Feb 2006

Posts: 194

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Anyone do stage IV on 2021?

Picking up an Ultra Limited this week. Thinking of doing a stage IV upgrade. Results, cost, regrets, etc?

Feb 28, 2021 | 10:48 AM

OldEnuf2NoBtr

Seasoned HDF Member

Joined: Dec 2009

Posts: 9,165

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From: Doghouse... mostly

Probably gain 1/3 more horsepower and torque over stock.
@ $200 per hp.
Only you can answer the regret(s) part.

Feb 28, 2021 | 01:49 PM

Rail

Road Master

Joined: Apr 2008

Posts: 921

Likes: 22

From: Houston, TX

Not a 2021 but I did do the SE Stage IV 131" to a 2020 RGS.. Always built/pieced my motor builds and have had really good luck so this was the 1st time I bought a kit. Mostly because my warranty was still good if I did. Dealer install for Stage IV 131" was $4k + SE Tuner and heavy breather,, OTD was $4800..143 torque/ 124 HP.. I'm meh about it.. Not sure if its the M8 engine, cams, SE heads, HD header or quality of the tune is off but my last 103" build pulled harder than this and the numbers weren't near the same (123/116).. In the end it's better than a stock 114 and my warranty is still intact.. I know what I'll be doing as soon as the warranty is up through.. Heads, cam and 2-1.. If warranty hadn't been and issue I would have been talking to Fuel Moto and GMR Performance