A selection of replacement parts for J Concepts. These parts are not original parts unless otherwise stated in the descriptions. Please check your choices thoroughly.
Add the quantities required for each item, then click "Add to Cart" before proceeding to the next page
| Replacement Parts | Price | Quantity | ||
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- Replaces - J Concepts BJ4: BB 3.18-6.35-2.78 J Concepts BJ4: Replacement Bearing - Economy Bearing Double shielded economy bearing R144A-ZZS-ECO (PK-2) Double shielded economy bearing Single Row Ball Bearings - 3.175x6.35x2.779 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$3.59
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57 (114 pcs) Available Now
-> Orders for more than 57 can be expected around Aug 13, 2026
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- Replaces - J Concepts BJ4: BB 4.76-7.94-3.18 J Concepts BJ4: Replacement Bearing - Economy Bearing Shielded Option Double shielded economy bearing R156A-ZZS-ECO (PK-2) Double shielded economy bearing Single Row Ball Bearings - 4.763x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$3.14
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260 (520 pcs) Available Now
-> Orders for more than 260 can be expected around Aug 13, 2026
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- Replaces - J Concepts BJ4: BB 4.76-9.53-3.18 J Concepts BJ4: Replacement Bearing - Economy Bearing Sealed Option Deleted Item. Available while stocks last. R166-2RB-ECO (PK-5) Deleted Item. Available while stocks last. Single Row Ball Bearings - 4.763x9.525x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$3.56
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10 (50 pcs) Available Now
-> Only the available quantity may be ordered online. No backorders.
View Entire Category: | ||||
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- Replaces - J Concepts BJ4: BB 4.76-9.53-3.18 J Concepts BJ4: Replacement Bearing - Economy Ceramic Hybrid Bearing Shielded Option Deleted Item. Available while stocks last. R166-CSN-ZZS-ACO-ECO (Each) Deleted Item. Available while stocks last. Single Row Ball Bearings - 4.763x9.525x3.175 mm Unflanged - Chrome Steel SAE 52100 - Ceramic Si3N4 Balls Bearing |
$3.04
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93 Available Now
-> Only the available quantity may be ordered online. No backorders.
View Entire Category: | ||||
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- Replaces - J Concepts BJ4: BB 4.76-7.94-3.18 J Concepts BJ4: Replacement Bearing - Economy Bearing Sealed Option Double black rubber sealed economy bearing R156A-2RS-ECO (Each) Double black rubber sealed economy bearing Single Row Ball Bearings - 4.763x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$6.77
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Temporarily Out Of Stock
-> Backorder now for delivery around Aug 27, 2026
View Entire Category: | ||||
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- Replaces - J Concepts BJ4: BB 4.76-9.53-3.18 J Concepts BJ4: Replacement Bearing - Economy Bearing Shielded Option Double shielded economy bearing R166-ZZS-ECO (PK-2) Double shielded economy bearing Single Row Ball Bearings - 4.763x9.525x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$2.86
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36 (72 pcs) Available Now
-> Orders for more than 36 can be expected around Aug 13, 2026
View Entire Category: | ||||
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- Replaces - J Concepts BJ4: BB 9.53-15.88-3.97 J Concepts BJ4: Replacement Bearing - Economy Bearing Shielded Option Deleted Item. Available while stocks last. R11012-ZZS-ECO (Each) Deleted Item. Available while stocks last. Single Row Ball Bearings - 9.525x15.875x3.969 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$5.00
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87 Available Now
-> Only the available quantity may be ordered online. No backorders.
View Entire Category: | ||||
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- Replaces - J Concepts BJ4: BB 9.53-15.88-3.97 J Concepts BJ4: Replacement Bearing - Economy Bearing Sealed Option Double blue rubber sealed economy bearing R11012-2RB-ECO (Each) Double blue rubber sealed economy bearing Single Row Ball Bearings - 9.525x15.875x3.969 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$2.23
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1802 Available Now
-> Orders for more than 1802 can be expected around Aug 13, 2026
View Entire Category: | ||||