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: Bearing - Economy Bearing Replacement Part: R144A-ZZS-ECO (PK-2) Double shielded economy bearing Single Row Ball Bearings - 3.175x6.35x2.779 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$3.77
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57 (114 pcs) Available Now
-> Orders for more than 57 can be expected around Jun 12, 2026
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- Replaces - J Concepts BJ4: BB 4.76-7.94-3.18 J Concepts BJ4: Bearing - Economy Bearing Sealed Option Replacement Part: 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 Jun 26, 2026
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- Replaces - J Concepts BJ4: BB 4.76-7.94-3.18 J Concepts BJ4: Bearing - Economy Bearing Shielded Option Replacement Part: R156A-ZZS-ECO (PK-2) Double shielded economy bearing Single Row Ball Bearings - 4.763x7.938x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$3.32
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262 (524 pcs) Available Now
-> Orders for more than 262 can be expected around Jun 12, 2026
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- Replaces - J Concepts BJ4: BB 4.76-9.53-3.18 J Concepts BJ4: Bearing - Economy Ceramic Hybrid Bearing Shielded Option Replacement Part: 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 4.76-9.53-3.18 J Concepts BJ4: Bearing - Economy Bearing Shielded Option Replacement Part: R166-ZZS-ECO (PK-2) Double shielded economy bearing Single Row Ball Bearings - 4.763x9.525x3.175 mm Unflanged - Chrome Steel SAE 52100 Bearing |
$2.95
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38 (76 pcs) Available Now
-> Orders for more than 38 can be expected around Jun 12, 2026
View Entire Category: | ||||
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- Replaces - J Concepts BJ4: BB 4.76-9.53-3.18 J Concepts BJ4: Bearing - Economy Bearing Sealed Option Replacement Part: 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 9.53-15.88-3.97 J Concepts BJ4: Bearing - Economy Bearing Shielded Option Replacement Part: 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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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 9.53-15.88-3.97 J Concepts BJ4: Bearing - Economy Bearing Sealed Option Replacement Part: 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 |
$2.32
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1806 Available Now
-> Orders for more than 1806 can be expected around Jun 12, 2026
View Entire Category: | ||||