Ofna® Replacement RC Nitro Engine Parts

A selection of replacement parts for Ofna®. 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 - 7x17x5 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Replaces -
Ofna® Maxx 3.5 - 12: BB 7-17-5
Ofna® Maxx 3.5 - 12: Bearing - High Speed Economy Bearing - Polyamide Retainer

Replacement Part: 697-2RU-T9H-ECO (Each)
Double lightly sealed economy bearing with a high speed polyamide retainer

Single Row Ball Bearings - 7x17x5 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing

$26.41 $31.69
Temporarily Out Of Stock -> Backorder now for delivery around Jul 16, 2026
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Single Row Ball Bearings - 7x19x6 mm - Stainless Steel AISI 440C - High Speed Polyamide Cage - Ceramic Si3N4 Balls - Replaces -
Ofna® 21 - 15 2.5CC: BB 7-19-6
Ofna® Force 12 Red Head - 21: BB 7-19-6
Ofna® Hyper.12 - 15: BB 7-19-6
Ofna® 21 - 15 2.5CC: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer
Ofna® Force 12 Red Head - 21: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer
Ofna® Hyper.12 - 15: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer

Replacement Part: 607-CSN-2RU-T9H-ECO (Each)
Double black rubber sealed economy ceramic-hybrid bearing with a high speed polyamide retainer

Single Row Ball Bearings - 7x19x6 mm Unflanged - Stainless Steel AISI 440C - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing

$72.41 $86.89
Temporarily Out Of Stock -> Backorder now for delivery around Jul 16, 2026
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Single Row Ball Bearings - 7x19x6 mm - Stainless Steel AISI 440C - Replaces -
Ofna® Pirate 1/8 Gas: BB 7-19-6
Ofna® Ultra LX COMP RTR: BB 7-19-6
Ofna® Ultra LX Pro RTR: BB 7-19-6
Ofna® 21 - 15 2.5CC: BB 7-19-6
Ofna® Force 12 Red Head - 15 2.5CC: BB 7-19-6
Ofna® Force 12 Red Head - 21: BB 7-19-6
Ofna® Pirate 1/8 Gas: Bearing - Stainless Bearing Shielded Option
Ofna® Ultra LX COMP RTR: Bearing - Stainless Bearing Shielded Option
Ofna® Ultra LX Pro RTR: Bearing - Stainless Bearing Shielded Option
Ofna® 21 - 15 2.5CC: Bearing - Stainless Bearing Shielded Option
Ofna® Force 12 Red Head - 15 2.5CC: Bearing - Stainless Bearing
Ofna® Force 12 Red Head - 21: Bearing - Stainless Bearing Shielded Option

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 - 7x19x6 mm - Stainless Steel AISI 440C - Replaces -
Ofna® Hyper.12 - 21: BB 7-19-6
Ofna® Hyper.12 - 21: Bearing - Stainless Bearing Sealed Option

Replacement Part: S607-2RS-MC3 (Each)
Double black rubber sealed standard stainless steel bearing

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

$7.41
158 Available Now -> Orders for more than 158 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 7x19x6 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Replaces -
Ofna® 21 - 15 2.5CC: BB 7-19-6
Ofna® Force 12 Red Head - 21: BB 7-19-6
Ofna® Hyper.12 - 15: BB 7-19-6
Ofna® Hyper.12 - 21: BB 7-19-6
Ofna® 21 - 15 2.5CC: Replacement Front Bearing - High Speed Bearing - Polyamide Retainer
Ofna® Force 12 Red Head - 21: Replacement Front Bearing - High Speed Bearing - Polyamide Retainer
Ofna® Hyper.12 - 15: Replacement Front Bearing - High Speed Bearing - Polyamide Retainer
Ofna® Hyper.12 - 21: Replacement Front Bearing - High Speed Bearing - Polyamide Retainer

Replacement Part: 607-Z-MC45-T9H-AF12-J (Each)
Single shielded high clearance bearing with a high speed polyamide retainer and light oil lubricant

Single Row Ball Bearings - 7x19x6 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing

$6.14
60 Available Now -> Orders for more than 60 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 7x19x6 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls - Replaces -
Ofna® 21 - 15 2.5CC: BB 7-19-6
Ofna® Force 12 Red Head - 21: BB 7-19-6
Ofna® 21 - 15 2.5CC: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer
Ofna® Force 12 Red Head - 21: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer

Replacement Part: 607-CSN-T9H-ECO (Each)
Open economy ceramic-hybrid bearing with a high speed polyamide retainer

Single Row Ball Bearings - 7x19x6 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing

$103.77
Temporarily Out Of Stock -> Backorder now for delivery around Jul 16, 2026
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Single Row Ball Bearings - 7x19x6 mm - Chrome Steel SAE 52100 - Replaces -
Ofna® GT LX: BB 7-19-6
Ofna® Hoar 4-WD Buggy: BB 7-19-6
Ofna® Pirate 1/8 Gas: BB 7-19-6
Ofna® Ultra GT: BB 7-19-6
Ofna® Ultra LX COMP RTR: BB 7-19-6
Ofna® Ultra LX Pro RTR: BB 7-19-6
Ofna® Ultra World 2: BB 7-19-6
Ofna® World GT: BB 7-19-6
Ofna® 21 - 15 2.5CC: BB 7-19-6
Ofna® Hyper.12 - 21: BB 7-19-6
Ofna® GT LX: Bearing - Standard Bearing
Ofna® Hoar 4-WD Buggy: Bearing - Standard Bearing
Ofna® Pirate 1/8 Gas: Bearing - Standard Bearing Sealed Option
Ofna® Ultra GT: Bearing - Standard Bearing
Ofna® Ultra LX COMP RTR: Bearing - Standard Bearing Sealed Option
Ofna® Ultra LX Pro RTR: Bearing - Standard Bearing Sealed Option
Ofna® Ultra World 2: Bearing - Standard Bearing
Ofna® World GT: Bearing - Standard Bearing
Ofna® 21 - 15 2.5CC: Bearing - Standard Bearing Sealed Option
Ofna® Hyper.12 - 21: Bearing - Standard Bearing Sealed Option

Replacement Part: 607-2RS-MC3 (Each)
Double rubber sealed standard bearing

Single Row Ball Bearings - 7x19x6 mm Unflanged - Chrome Steel SAE 52100 Bearing

$3.41
51 Available Now -> Orders for more than 51 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 9x17x4 mm - Chrome Steel SAE 52100 - Replaces -
Ofna® 15 2.5CC All Models: BB 9-17-4
Ofna® 15 2.5CC All Models: Bearing - Standard Bearing

Replacement Part: 689-MC3-AF12 (Each)
Open standard bearing with low-torque light oil lubricant

Single Row Ball Bearings - 9x17x4 mm Unflanged - Chrome Steel SAE 52100 Bearing

$4.77
Temporarily Out Of Stock -> More due: Jun 21, 2026 -> Orders for more than 0 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 9x17x4 mm - Stainless Steel AISI 440C - Replaces -
Ofna® 15 2.5CC All Models: BB 9-17-4
Ofna® 15 2.5CC All Models: Bearing - Stainless Bearing

Replacement Part: S689-MC3-AF12 (Each)
Open standard stainless steel bearing

Single Row Ball Bearings - 9x17x4 mm Unflanged - Stainless Steel AISI 440C Bearing

$3.77
9 Available Now -> More due: Jun 21, 2026 -> Orders for more than 9 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 10x19x5 mm - Stainless Steel AISI 440C - Replaces -
Ofna® Hyper.12 - 21: BB 10-19-5
Ofna® Hyper.12 - 21: Replacement Bearing - Stainless Bearing Shielded Option

Replacement Part: S6800-ZZ (Each)
Double shielded standard stainless steel bearing

Single Row Ball Bearings - 10x19x5 mm Unflanged - Stainless Steel AISI 440C Bearing

$9.77
31 Available Now -> Orders for more than 31 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 10x19x5 mm - Chrome Steel SAE 52100 - Replaces -
Ofna® Hyper.12 - 21: BB 10-19-5
Ofna® Hyper.12 - 21: Replacement Bearing - Standard Bearing Shielded Option

Replacement Part: 6800-ZZ (Each)
Double shielded standard bearing

Single Row Ball Bearings - 10x19x5 mm Unflanged - Chrome Steel SAE 52100 Bearing

$3.59
78 Available Now -> Orders for more than 78 can be expected around Jul 08, 2026
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Single Row Ball Bearings - 12x21x5 mm - Stainless Steel AISI 440C - Replaces -
Ofna® Force 12 Red Head - 21: BB 12-21-5
Ofna® Force 12 Red Head - 21: Replacement Bearing - Economy Bearing Shielded Option

Replacement Part: S6801-ZZ-ECO (Each)

Single Row Ball Bearings - 12x21x5 mm Unflanged - Stainless Steel AISI 440C Bearing

$4.68
10 Available Now -> Orders for more than 10 can be expected around Jul 11, 2026
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Single Row Ball Bearings - 12x21x5 mm - Chrome Steel SAE 52100 - Replaces -
Ofna® Force 12 Red Head - 15 2.5CC: BB 12-21-5
Ofna® Force 12 Red Head - 15 2.5CC: 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

$3.50
16 Available Now -> Orders for more than 16 can be expected around Jul 11, 2026
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Single Row Ball Bearings - 13x24x6 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls - Replaces -
Ofna® 21 - 15 2.5CC: BB 13-24-6
Ofna® Maxx 3.5 - 12: BB 13-24-6
Ofna® 21 - 15 2.5CC: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer
Ofna® Maxx 3.5 - 12: Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer
Ofna® Maxx 3.5 - 12: Replacement Bearing - High Speed Economy Ceramic-Hybrid Bearing - Polyamide Retainer

Replacement Part: MR2413-CSN-T9H-ECO (Each)
Open economy ceramic-hybrid bearing with a high speed polyamide retainer

Single Row Ball Bearings - 13x24x6 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Ceramic Si3N4 Balls Bearing

$76.59 $91.91
Temporarily Out Of Stock -> Backorder now for delivery around Jul 16, 2026
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Single Row Ball Bearings - 13x24x6 mm - Chrome Steel SAE 52100 - High Speed Polyamide Cage - Replaces -
Ofna® 21 - 15 2.5CC: BB 13-24-6
Ofna® Maxx 3.5 - 12: BB 13-24-6
Ofna® 21 - 15 2.5CC: Bearing - High Speed Bearing - Polyamide Retainer
Ofna® Maxx 3.5 - 12: Bearing - High Speed Bearing - Polyamide Retainer

Replacement Part: MR2413-C3-T9H (Each)
Open standard bearing with a high speed polyamide retainer

Single Row Ball Bearings - 13x24x6 mm Unflanged - Chrome Steel SAE 52100 - High Speed Polyamide Cage Bearing

$6.86
20 Available Now -> Orders for more than 20 can be expected around Jul 08, 2026
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