K.B 40 All Models Replacement RC Nitro Engine Parts

A selection of replacement parts for K.B. 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 - 9.525x22.225x5.556 mm - Chrome Steel SAE 52100 - Replaces -
BB 9.53-22.23-5.56
Bearing - Economy Bearing

Replacement Part: R6-2RS-ECO (Each)
Double black rubber sealed economy bearing with a NON-ISO width

Single Row Ball Bearings - 9.525x22.225x5.556 mm Unflanged - Chrome Steel SAE 52100 Bearing

$26.86
20 Available Now -> Orders for more than 20 can be expected around Jun 26, 2026
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Single Row Ball Bearings - 12x24x6 mm - Stainless Steel AISI 440C - Replaces -
BB 12-24-6
Replacement Bearing - Stainless Bearing Shielded Option
Replacement Bearing - Stainless Bearing Shielded Option

Replacement Part: S6901-ZZ (Each)
Deleted Item. Available while stocks last.

Single Row Ball Bearings - 12x24x6 mm Unflanged - Stainless Steel AISI 440C Bearing

$8.14 $9.76
1 Available Now -> Only the available quantity may be ordered online. No backorders.
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Single Row Ball Bearings - 15x32x9 mm - Chrome Steel SAE 52100 - Replaces -
BB 15-32-9
Replacement Rear Bearing - Standard Bearing Shielded Option

Replacement Part: 6002-ZZ (PK-2)
Deleted Item. Available while stocks last.

Single Row Ball Bearings - 15x32x9 mm Unflanged - Chrome Steel SAE 52100 Bearing

$4.61 $13.32
8 (16 pcs) Available Now -> Only the available quantity may be ordered online. No backorders.
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Single Row Ball Bearings - 15x32x9 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Replaces -
BB 15-32-9
Replacement Rear Bearing - High Speed Bearing - Polyamide Retainer

Replacement Part: 6002-Z-C3-T9H-AF12 (PK-2)
Deleted Item. Available while stocks last.

Single Row Ball Bearings - 15x32x9 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing

$4.39 $12.11
80 (160 pcs) Available Now -> Only the available quantity may be ordered online. No backorders.
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Single Row Ball Bearings - 17x30x7 mm - Stainless Steel AISI 440C - High Speed Polyamide Cage - Ceramic Si3N4 Balls - Replaces -
BB 17-30-7
Bearing - High Speed Ceramic-Hybrid Bearing - Polyamide Retainer Sealed Option
Bearing - High Speed Ceramic-Hybrid Bearing - Polyamide Retainer Sealed Option
Bearing - High Speed Ceramic-Hybrid Bearing - Polyamide Retainer Sealed Option

Replacement Part: S6903-CSN-2RS-T9H (PK-100)
Double sealed ceramic-hybrid bearing with a high speed polyamide retainer

Single Row Ball Bearings - 17x30x7 mm Unflanged - Stainless Steel AISI 440C - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing

$1,195.77 $1,434.93
Temporarily Out Of Stock -> Backorder now for delivery around Jul 20, 2026
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