Primary Bearings – BikersHouse

Bare knuckle performance Bare Knuckle Performance, Overbearing 2.0

Sun, 04 Jan 2026 06:23:43 +0000

Bare knuckle performanceBare Knuckle Performance, Overbearing 2.0 700953

fits 36-64 Big Twin (NU)

An inner primary bearing, that supports the transmission mainshaft, was added to the aluminum primary housing with the introduction of the 1965 Panhead. Before that the tin primary housing was used and there was no option to install any aftermarket bearing support to support the maindrive gear bushing, that is the cause of leaking mainshafts, worse than with the 1965-up transmissions. The Overbearing 2.0 is actually a hardened replacement for the stock mainshaft lock nut (35211-36), with a precision ground roller bearing inside. When installed the Overbearing 2.0 keeps your mainshaft and main drive gear concentric, eliminating maindrive gear bushing wear which drastically reduces, if not altogether prevents mainshaft leaks. This narrower 2.0 version is now fully compatible with all regular stock and aftermarket clutch hubs.

Δείτε περισσότερα στον κατάλογο

Home > Parts > Drivetrain > Primary > Primary Bearings > Bare Knuckle Performance, Overbearing 2.0

Jims JIMS, inner primary bearing seal

Sun, 04 Jan 2026 03:49:53 +0000

JimsJims, Inner Primary Bearing Seal 998665

fits H-D with 961592 JIMS primary bearing upgrade kit

Replacement seal for 961592 JIMS primary bearing upgrade kit

Δείτε περισσότερα στον κατάλογο

Home > Parts > Drivetrain > Primary > Primary Bearings > Primary Bearing & Seal Kits > JIMS, inner primary bearing seal

S&S S&S, inner race only for roller bearing primary

Thu, 25 Dec 2025 06:10:15 +0000

S&SS&S, inner race only for roller bearing primary 565145

fits 08-24 Softail; 08-17 (NU) Dyna; 08-24 FLT/Touring

Inner race only for 9231 mainshaft support bearing in backside of inner primary cover. This inner race is a crimp-on installation onto mainshaft. Features an extra step on the inside to help prevent the inner race moving during high torque loads. OEM replacement reference 34091-08. Note: See JIMS 978349 for install/remove tool.

Δείτε περισσότερα στον κατάλογο V-Twin

Home > Parts > Drivetrain > Primary > Primary Bearings > S&S, inner race only for roller bearing primary

All Balls All balls inner primary bearing & seal kit

Tue, 23 Dec 2025 14:20:04 +0000

All BallsAll balls inner primary bearing & seal kit 530511

fits 90-06 Big Twin (NU) (Excl. 2006 Dyna)

Double row ball bearing, for use on straight splined shafts only

Δείτε περισσότερα στον κατάλογο V-Twin

Home > Parts > Drivetrain > Primary > Primary Bearings > All balls inner primary bearing & seal kit

MCS MCS, bearing inner primary (open)

Tue, 23 Dec 2025 08:37:53 +0000

MCSMCS, bearing inner primary (open) 520090

fits L1984 4-speed FX; L84-06 5-speed Softail; 85-06 FLT/Touring; 85-94 FXR; 91-05 Dyna (NU)

Mainshaft support bearing in backside of inner primary. OEM replacement reference 9135

Δείτε περισσότερα στον κατάλογο V-Twin; Workshop

Home > Parts > Drivetrain > Primary > Primary Bearings > MCS, bearing inner primary (open)

Jims JIMS, 84-06 5-speed primary bearing upgrade kit

Tue, 23 Dec 2025 00:26:24 +0000

JimsJIMS, 84-06 5-speed primary bearing upgrade kit 961592

fits L84-06 5-speed Softail; 85-06 FLT/Touring; 85-94 FXR; 91-05 Dyna (NU)

Closed double row ball bearing kit with seal and retaining ring which replaces the OEM 9135 bearing and 12052A seal. Great for open belt drive upgrade from a open to a closed bearing, or just added reliability in combination with high performance engines. Works with 5-speed transmissions only. Note: For replacement seal see JIMS 998665

Δείτε περισσότερα στον κατάλογο V-Twin

Home > Parts > Drivetrain > Primary > Primary Bearings > JIMS, 84-06 5-speed primary bearing upgrade kit

All Balls All Balls, inner race only for roller bearing

Mon, 22 Dec 2025 21:06:23 +0000

All BallsAll Balls, inner race only for roller bearing 921493

fits 2007 Softail; 06-07 Dyna; 2007 FLT/Touring (NU)

Inner race only of mainshaft support bearing in backside of inner primary cover. Crimp-on installation onto mainshaft. OEM replacement reference 34901-06. Note: See JIMS 978349 for install/remove tool.

Δείτε περισσότερα στον κατάλογο V-Twin; Workshop

Home > Parts > Drivetrain > Primary > Primary Bearings > All Balls, inner race only for roller bearing

All Balls All Balls, inner primary bearing & seal kit

Mon, 22 Dec 2025 12:29:12 +0000

All BallsAll Balls, inner primary bearing & seal kit 530633

fits 08-24 Softail; 08-17 (NU) Dyna; 08-24 FLT/Touring

Incl. outer single row roller bearing bearing, inner race, snap-ring & seal. Mainshaft support bearing used in backside of inner primary cover. OEM replacement reference 9231, 12052A and 60678-85.

Δείτε περισσότερα στον κατάλογο V-Twin

Home > Parts > Drivetrain > Primary > Primary Bearings > All Balls, inner primary bearing & seal kit

All Balls All Balls, inner primary bearing (sealed)

Mon, 22 Dec 2025 12:29:12 +0000

All BallsAll Balls, inner primary bearing (sealed) 530634

fits 65-84 FL; 71-E84 FX; E1984 FXST (NU)

Supports transmission mainshaft. OEM replacement reference 9061, 9037. Also replaces open bearing 9040 in 71-78 FX models.

Δείτε περισσότερα στον κατάλογο V-Twin

Home > Parts > Drivetrain > Primary > Primary Bearings > All Balls, inner primary bearing (sealed)

All Balls All Balls, inner primary bearing

Mon, 22 Dec 2025 11:04:26 +0000

All BallsAll Balls, inner primary bearing 520091

fits 07-24 Softail; 06-17 (NU) Dyna; 07-24 FLT/Touring

Mainshaft support bearing in backside of inner primary cover. This is the outer roller bearing only, without the inner race, which is crimped onto the mainshaft. OEM replacement reference 9231. Note: See optional 921494 (34091-08) inner race for 08-up models. See optional 921493 (34091-06) inner race for earlier 06-07 Dyna; 2007 Softail; Touring models.

Δείτε περισσότερα στον κατάλογο V-Twin; Workshop

Home > Parts > Drivetrain > Primary > Primary Bearings > All Balls, inner primary bearing