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BMW F30 Performance Pulleys

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N55 "Bulletproof" Crank Kit

ES#4365386 - ECSf30n55bpKT - N55 "Bulletproof" Crank Kit - .or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. - Assembled By ECS - BMW

...or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4365386
Mfg#:
ECSF30N55BPKT
Ships in 5 Business Days
ON SALE!
$515.99

This product was last offered at the strikethrough price on
01-03-2026

$500.76 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

N55 "Bulletproof" Crank Kit

ES#4660307 - ECSF30N55BP540KT - N55 "Bulletproof" Crank Kit - .or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. - Assembled By ECS - BMW

...or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Includes 5w-40 oil which is a slighty higher viscosity than recommended by BMW - great for performance ap

Brand:
Assembled By ECS - Corporate Logo
ES#:
4660307
Mfg#:
ECSF30N55BP540KT
Ships in 5 Business Days
ON SALE!
$513.99

This product was last offered at the strikethrough price on
01-03-2026

$497.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

ATI Super Damper / Harmonic Balancer - Stock Size

Protect your engine against harmful harmonics at all RPM levels affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ATI - Corporate Logo
ES#:
4931465
Mfg#:
918573
In Stock at Vendor
$418.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N55 "Bulletproof" Crank Kit

ES#4642987 - ECSF30N55BPKRKT - N55 "Bulletproof" Crank Kit - .or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. Featuring Kevlar reinforced belt! - Assembled By ECS - BMW

...or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service. Featuring Kevlar reinforced belt! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4642987
Mfg#:
ECSF30N55BPKRKT
Ships in 5 Business Days
ON SALE!
$520.99

This product was last offered at the strikethrough price on
05-02-2026

$505.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

ATI Super Damper / Harmonic Balancer - 10% Underdrive

Protect your engine against harmful harmonics at all RPM levels - 10% Underdrive to increase usable horsepower without greatly affecting engine accessories affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ATI - Corporate Logo
ES#:
4931466
Mfg#:
918352
Back Ordered
$451.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

"Spline Lock" Crank Hub Solution

This "Complete Package" provides the OEM hardware required for installation, ensuring your timing remains rock-solid even under extreme track conditions or high-horsepower builds. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
5446120
Mfg#:
VTT-NS55CHSCP
Ships in 10 Business Days
$889.99 USD
Free Shipping

"Spine Lock" Crank Hub

The VTT N55/S55 Spline Lock Hub offers a sophisticated, non-invasive alternative to the labor-intensive "drill and pin" methods used to secure BMW crankshafts. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
5446119
Mfg#:
VTT-NS55CHO
Ships in 10 Business Days
$819.99 USD
Free Shipping

ATI Super Damper / Harmonic Balancer - 21% Underdrive

Protect your engine against harmful harmonics at all RPM levels - 21% Underdrive to greatly increase usable horsepower for racing applications affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ATI - Corporate Logo
ES#:
4931467
Mfg#:
918351
Back Ordered
$418.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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