Built from King's pMax Black tri-metal construction — a lead-bronze layer over a steel backing with a nickel barrier and lead/tin/copper babbitt overlay — these bearings are developed for forged-crank, high-horsepower builds. The STDX size is standard journal size machined for an additional .001" of oil clearance, and the set features narrowed bearings for large-radius crankshafts with enlarged, chamfered oil holes.
Specifications
| Type | Performance race main bearing set (King XP Series, pMax Black) |
| Material | Tri-metal (lead-bronze over steel backing, nickel barrier, lead/tin/copper babbitt overlay) |
| Size | STDX — standard with +.001" additional oil clearance |
| Application | Forged-crankshaft / high-horsepower builds |
| Quantity | Complete main bearing set |
| Part Number | MB5734XPCSTDX |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011-2014 | Ford | F-150 | FX2 |
| 2011-2014 | Ford | F-150 | FX4 |
| 2011-2017 | Ford | F-150 | King Ranch |
| 2011-2017 | Ford | F-150 | Lariat |
| 2011-2017 | Ford | F-150 | Platinum |
| 2016-2017 | Ford | F-150 | SSV |
| 2011-2014 | Ford | F-150 | STX |
| 2011-2017 | Ford | F-150 | XL |
| 2011-2017 | Ford | F-150 | XLT |
| 2012-2013 | Ford | Mustang | Boss 302 |
| 2011-2017 | Ford | Mustang | GT |
| 2015 | Ford | Mustang | GT 50 Years Limited Edition |
| 2015-2017 | Ford | Mustang | GT Premium |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
