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The Ultimate Upgrade for a Record-Setting S58!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Complete cylinder head with guides, seats, valves, & springs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Put an end to your S55 crank hub woes once and for all
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Lifetime Replacement
Forged Chromoly with Diamond Like Carbon Coating, built for superior wear resistance at the same weight as OE.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
Upgrade to ARP high tensile strength Custom Age 625+ Head Studs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
06-03-2026
Lifetime Replacement
The Ultimate Solution to Increasing Your S58's Capabilities!
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Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Lifetime Replacement
Complete cylinder head with guides, seats, valves, & springs
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Upgrade your S55 Engine with this all Inclusive Kit from 5150!
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The strongest and smoothest bearings for your BMW, featuring heavy-duty ACL "Duraglide" bearing shells treated by WPC for reduced friction and enhanced durability.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
Forged from 4340 aircraft-quality alloy for maximum performance
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
The strongest and smoothest bearings for your BMW, featuring heavy-duty ACL "Duraglide" bearing shells treated by WPC for reduced friction and enhanced durability.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
Safety-wired nut to alleviate the nut backing off, leaving you with no oil pressure
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
05-02-2026
Lifetime Replacement
Upgrade to Manley's Platinum Series Pistons for increased performance!
Stock 10.2:1 Compression Ratio
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Std. Size
This product was last offered at the strikethrough price on
05-18-2026
Install MMX's One-Piece Crank Hub as a Solution to Hub Slippage!
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Lifetime Replacement
A truly remarkable solution from Vargas that will eliminate the risk of a spun crank hub. Spline Lock Crank Hub with Crank Bolt Capture, OEM bolt, OEM Oil pump sprocket, OEM oil sprocket retainer included.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes! 2X Entries For Our 25th Anniversary Sweepstakes!
