Wirelessly connect your JB4 to your phone!
For JB4 systems produced 2017 and later. Please check board diagrams to properly identify your JB4 before ordering.
Dinan's newest in-line tuner that not only gives more power but also many additional features accessible via their free BT phone app - Adds up to 60-75 WHP/WTQ on BMW S58 powered applications!
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4872006
Mfg#:
D440-0200
Ships on Aug 26, 2026
ON SALE!
SAVE 10%
$749.99
This product was last offered at the strikethrough price on 07-30-2026
This harness is the perfect solution for ReFlex+ users who want a simple, reliable, and cost-effective plug-and-play option without compromising their vehicle's stock wiring.
Dinan's newest in-line tuner that not only gives more power but also many additional features accessible via their free BT phone app - Adds up to 60-75 WHP/WTQ on BMW S58 powered applications and includes a factory matching 4-YR/50k mile warranty!
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4872005
Mfg#:
D440-0200-W
Ships on Aug 26, 2026
ON SALE!
SAVE 10%
$2349.99
This product was last offered at the strikethrough price on 07-30-2026
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.
Max gains of up to +69 HP and +55 lb-ft TRQ (Crank); +60 HP and +49 lb-ft TRQ (Wheel)
Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes! For Non-Competition models only!
Brand:
ES#:
4505886
Mfg#:
D440-0164
Ships in 10 Business Days
ON SALE!
SAVE 10%
$439.99
This product was last offered at the strikethrough price on 07-30-2026
All the performance upgrade options from the best brands in the business to help build your dreams. Our performance parts catalog is the largest anywhere and constantly growing to keep your build on track.
