OS Engines® FS90 - 4 Stroke W-Muffler Replacement RC Nitro Engine Parts

A selection of replacement parts for OS Engines®. 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
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Replaces -
BB 6.35-15.875
Camshaft Rear Bearing - Stainless Bearing

Replacement Part: SR4-ZZ-MC3 (Each)
Double shielded standard stainless steel bearing

Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Stainless Steel AISI 440C Bearing

$4.23
40 Available Now -> Orders for more than 40 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 7x19x6 mm - Stainless Steel AISI 440C - Replaces -
BB 7-19
Camshaft Centre Bearing - Stainless Bearing

Replacement Part: S607-ZZ-MC3 (Each)
Double shielded standard stainless steel bearing

Single Row Ball Bearings - 7x19x6 mm Unflanged - Stainless Steel AISI 440C Bearing

$5.59
99 Available Now -> Orders for more than 99 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 9.525x22.225x7.142 mm - Chrome Steel SAE 52100 - Replaces -
26731002
Front Bearing - Standard Bearing Shielded Option

Replacement Part: R6A-ZZ-MC3 (Each)
Double shielded standard bearing

Single Row Ball Bearings - 9.525x22.225x7.142 mm Unflanged - Chrome Steel SAE 52100 Bearing

$3.95
19 Available Now -> Orders for more than 19 can be expected around Jul 08, 2026
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- Replaces -
BB 12-28-8
Replacement Rear Bearing - Standard Bearing Shielded Option

Replacement Part: 6001-ZZ (Each)
Double shielded standard bearing

Single Row Ball Bearings - 12x28x8 mm Unflanged - Chrome Steel SAE 52100 Bearing

$7.41
Temporarily Out Of Stock -> Backorder now for delivery around Jun 15, 2026
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Single Row Ball Bearings - 12x28x8 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Replaces -
BB 12-28-8
Replacement Rear Bearing - High Speed Bearing - Polyamide Retainer

Replacement Part: 6001-Z-C3-T9H-AF12-E (Each)
Deleted Item. Available while stocks last. Single shielded bearing with high speed polyamide retainer and light oil lubricant

Single Row Ball Bearings - 12x28x8 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing

$35.00 $66.50
4 Available Now -> Only the available quantity may be ordered online. No backorders.
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Single Row Ball Bearings - 15x20x3.5 mm - Chrome Steel SAE 52100 Camshaft Front Bearing - Economy Bearing

Replacement Part: MR2015-ECO (Each)
Open economy bearing

Single Row Ball Bearings - 15x20x3.5 mm Unflanged - Chrome Steel SAE 52100 Bearing

$6.59
34 Available Now -> Orders for more than 34 can be expected around Jul 02, 2026
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