Located between the crank hub and sprocket
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
3548419
Mfg#:
11238090136
5% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$21.99
This product was last offered at the strikethrough price on 06-03-2026
$20.99 USD
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Lifetime Replacement
Performance Coated Main Bearing Set for the N55 Engine - Std. Size
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4759217
Mfg#:
5150-HPRBS-N55
$399.99 USD
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on orders $49 and up
Lifetime Replacement
Hub that mounts the crank pulley
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
20560
Mfg#:
11237570107
8% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$167.00
This product was last offered at the strikethrough price on 06-03-2026
$152.99 USD
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Lifetime Replacement
Replace those Worn Out Main Bearings! Set of 5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Std. Size
Brand:
ES#:
4686197
Mfg#:
MB5803CA
$312.99 USD
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...or at least as "Bulletproof" as your E9X 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:
ES#:
4365385
Mfg#:
ECSE90N55BPKT
ON SALE!
$573.99
This product was last offered at the strikethrough price on 03-19-2026
$557.86 USD
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Partial Replacement
Performance Coated Main Bearing Set for the N55 Engine - Std. Size
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4759214
Mfg#:
5150-HPMBS-N55
$549.99 USD
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Lifetime Replacement
Violet, 50.00mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
256967
Mfg#:
11247576715
9% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$45.99
This product was last offered at the strikethrough price on 06-03-2026
$41.99 USD
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Lifetime Replacement
Replace when doing a clutch job.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
3188179
Mfg#:
11217838071
$51.11
This product was last offered at the strikethrough price on 04-27-2026
$34.99 USD
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on orders $49 and up
Lifetime Replacement
Replace those Worn Out Main Bearings! Set of 5
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
4759946
Mfg#:
MB5803CA0.25
$312.99 USD
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Lifetime Replacement
Yellow. 56mm Standard bore
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2542532
Mfg#:
11217627037
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$40.99
This product was last offered at the strikethrough price on 06-03-2026
$37.99 USD
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Lifetime Replacement
Single lower crankshaft bearing with the green designation marking.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2583864
Mfg#:
11217627034
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$40.99
This product was last offered at the strikethrough price on 06-03-2026
$37.99 USD
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Lifetime Replacement
Red. 56mm standard bore.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2598949
Mfg#:
11217627035
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$40.99
This product was last offered at the strikethrough price on 06-03-2026
$37.99 USD
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Lifetime Replacement
Yellow, 56.00mm
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2598948
Mfg#:
11217627033
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$40.99
This product was last offered at the strikethrough price on 06-03-2026
$37.99 USD
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Lifetime Replacement
Green designation lower bearing shell. 55.50mm(+0.50)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
20179
Mfg#:
11217512511
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$40.99
This product was last offered at the strikethrough price on 06-03-2026
$37.99 USD
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Lifetime Replacement
64.50MM(+0.50)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
20205
Mfg#:
11217515384
10% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$39.99
This product was last offered at the strikethrough price on 06-03-2026
$35.99 USD
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Lifetime Replacement
Standard bore
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2609322
Mfg#:
11217627038
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$40.99
This product was last offered at the strikethrough price on 06-03-2026
$37.99 USD
Add to Cart
Free Shipping
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Lifetime Replacement