Login
JB1 to JB4 Upgrade Kit
JB1 to JB4 Upgrade Kit
JB1 to JB4 Upgrade Kit
 Next

JB1 to JB4 Upgrade Kit

Marsoni M251S
Sale price$175.00
Pay 4 payments of $43.75 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
JB1 to JB4 Upgrade KitUpgrades your existing BMS Stage1 to a EA888 JB4 BETA system. The JB4 BETA features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air fuel ratio, fuel trims, and engine knock, boost mapping by gear for improved traction, integrated water meth control, and much more. The upgrade kit cost is $125 outright. There is no longer a core exchange program available. After the upgrade you can keep your old
Easy Shipping

Quick Dispatch:

Your JB1 to JB4 Upgrade Kit orders ship within 1-2 business days.

Delivery Options:

  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your JB1 to JB4 Upgrade Kit ships.

Need Help?
Questions about JB1 to JB4 Upgrade Kit, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for JB1 to JB4 Upgrade Kit in your area.

Get Shipping Estimates

Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 2180 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Deborah Xander
Battle Creek, US
★★★★★ 5
Great price, nice mild smell
Scent: Lavender
use this for all kinds of floor cleaning mops. Roborock vac and mop system. Smells gentle and mild.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 26, 2025
J
Verified Purchase
janet
Carnegie, US
★★★★★ 4
Good, not great
Scent: Lemon
Good, not great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2025
J
Verified Purchase
JnJ
Port Orchard, US
★★★★★ 5
Great cleaner, smells nice!
Scent: Lemon
I use half a bottle and mix with water--great all-purpose cleaner and it doesn't have a horrible chemical scent. It smells nice and cleans well. I buy this on a subscription.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 12, 2025
J
Verified Purchase
John Bennett
Waukegan, US
★★★★★ 5
Prices right cleans well
Scent: Lemon
Cleans well in my power mop but if you use too much it leaves foam on the floor. Use sparingly...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 13, 2025
W
Verified Purchase
Warnor
Carnegie, US
★★★★★ 5
Good Stuff
Style: Trim & Plastic Restorer, 12 fl. oz., Style: Trim & Plastic Restorer, 12 fl. oz.
Worked great on my car, the plastic was oxidized pretty bad, this made it look like new.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026

recommand products

Arthur Price Champagne Gold Avalon Salad Serving Spoon & Fork
Arthur Price Champagne Gold Avalon Salad Serving Spoon & Fork
48.30
 Naturally Radiant Gentle Regime Bundle Cleanser Serum Toner 480ml
Naturally Radiant Gentle Regime Bundle Cleanser Serum Toner 480ml
26.40
 Plantur 39 Anti-Grey Effect 2x 200 ml
Plantur 39 Anti-Grey Effect 2x 200 ml
64.38
 Sigg Gemstone Thermal Flask
Sigg Gemstone Thermal Flask
55.72
 Nikki Temple Glow II LED Mask Pink Facial Light Therapy Device
Nikki Temple Glow II LED Mask Pink Facial Light Therapy Device
171.25