Nelson Side Exhaust - 91 Replacement RC Nitro Engine Parts

A selection of replacement parts for Nelson. These parts are not original parts unless otherwise stated in the descriptions. Please check your choices thoroughly.

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Replacement Parts Price Quantity
Single Row Ball Bearings - 6.35x15.875x4.978 mm - Stainless Steel AISI 440C - Replaces -
BB 6.35-15.88-4.98
Bearing - Stainless Bearing Shielded Option

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 Jun 18, 2026
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Single Row Ball Bearings - 6.35x15.875x4.978 mm - Chrome Steel SAE 52100 - Replaces -
BB 6.35-15.88-4.98
Bearing - Standard Bearing Shielded Option

Replacement Part: R4-ZZ-MC3 (Each)
Double shielded standard bearing

Single Row Ball Bearings - 6.35x15.875x4.978 mm Unflanged - Chrome Steel SAE 52100 Bearing

$3.95
165 Available Now -> Orders for more than 165 can be expected around Jun 18, 2026
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Single Row Ball Bearings - 12x21x5 mm - Chrome Steel SAE 52100 - Replaces -
BB 12-21-5
Replacement Bearing - Economy Bearing

Replacement Part: 6801-ZZ-ECO (Each)
Double shielded economy bearing

Single Row Ball Bearings - 12x21x5 mm Unflanged - Chrome Steel SAE 52100 Bearing

$3.59
16 Available Now -> Orders for more than 16 can be expected around Jun 21, 2026
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