Towing Equipment› Hitches

B & W Trailer Hitches

~(19 lbs. 12X12X9)~ King Pin

$153.33

SKU: B010 GNXA4000

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

~(19 lbs. 12X12X9)~ King Pin

MIA's Description

The B & W Trailer Hitches GNXA4000 is a king pin adapter designed for use with the B&W Turnoverball gooseneck hitch. It converts the hitch to an in-bed king pin, allowing you to tow a trailer equipped with an inverted fifth-wheel hitch. This adapter has a Gross Trailer Weight (GTW) of 30,000 LB and a Vertical Trailer Weight (VTW) of 7,500 LB. It is constructed from aluminum and comes with a Limited Lifetime Warranty.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandB & W Trailer Hitches
Part NumberB010 GNXA4000

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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