Plug & play power — gain up to 125whp on pump gas and up to 260whp on higher octane or E85 mixtures
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4882953
Mfg#:
JB4S68WSMPK
Ships on Jun 29, 2026
$1048.00
This product was last offered at the strikethrough price on 05-19-2026
Max gains of up to +98 HP and +103 lb-ft TRQ (Crank); +86 HP and +94 lb-ft TRQ (Wheel).
Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4430040
Mfg#:
D440-0146
Back Ordered
11% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$749.99
This product was last offered at the strikethrough price on 06-10-2026
Attaches to the JB4 allowing it to directly control both traditional port injection kits and WMI port injection kits.
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A piggy back tuner that allows you to adjust throttle response for peak performance.
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The ultimate OBD adapter designed to deliver exceptional speed, maximum connection stability, and great performance for flashing, coding, and live monitoring
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Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash.
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Replacement JB4 OBDII cable suitable for use in all applications where the JB4 attaches to the OBDII port under the dash. Includes JB4 side repair harness molex pigtail.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4714892
Mfg#:
JB4-OBDII-CA-MC
Ships on Jun 29, 2026
$30.00 USD
Lifetime Replacement
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