Vintage Components - SunTour Bottom Brackets

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On this page:
Bottom brackets: XC Pro English with Grease Guard | 68mm x 115mm English XC Pro Grease Guard | Superbe 68-W English | XC Comp English | Cyclone English
Spindles: 68mm x 127mm triple Grease Guard | 68mm x 115mm Grease Guard | Superbe Pro BB-91, 68 x 112mm
Cups: WTB Grease Guard Microlite English cups | Superbe Pro SB-11 English cups
Sleeves: Grease Guard bottom bracket sleeve

Here is a good explanation of SunTour Grease Guard and Microlite bottom brackets.

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SunTour XC Pro English bottom bracket with SunTour Grease Guard System. New old stock, $100.00/each

We have several, all English threaded: 1.37 x 24

With these spindles:

68mm x 127.5 (we have four of these)
73mm x 130 (we have three of these)

This bottom bracket uses Wilderness Trail Bike's "Grease Guard" system. The crank bolts are hollow, allowing grease injection into the bottom bracket and out ports on the spindle. The dust caps have rubber seals. Neat!

These were produced in the 1980s.

New, with orginal packaging.

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SunTour 68mm x 115mm English XC Pro Grease Guard bottom bracket. New, $175.00/each

Though new and unridden, this bottom bracket was installed by our shop in a bike and then removed because the spindle was the wrong length for the user.

A lovely piece of machinery

End view from the drive side.

From the other side.

The box it will come in.

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SunTour Superbe 68-W bottom bracket, 68mm x 113mm. Lightly used, $100.00/each

Lovely condition.

The crank arm fixing bolts are included.

Here's a close-up of the spindle.

The cups

The bearing surfaces of the cups.

A last shot of the crank arm fixing bolts. Note that they are Cro-Moly steel.

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SunTour XC Comp English bottom bracket. New old stock, $70.00

We have two, English threaded, 1.37 x 24

68 x 127.5
68 x 128.5

New, with original packaging

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SunTour Cyclone bottom bracket. 68mm spindle w/ English threaded cups (1.37 x 24)- $60.00

Part# BB-36

Spindle length: 113mm

SunTour Cyclone bottom brackets were produced in the 1980s. The cups have seals that generally keep water from getting into the bearings.

SunTour bottom brackets were made to JIS (Japanese Industrial Standards). That means the taper matches Sugino and is very close to Campagnolo. Most users find all three interchangable.

Ours is in excellent condition with one small, slight imperfection in the adjustable cup bearing surface

You can see the rubber seals that protect the bearings

View of the bearing surfaces

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Suntour 68mm x 127mm Grease Guard Triple Spindle. Used, $45.00

• For triple cranksets
• Embossed on the spindle: ML-XP-68

For double cranksets

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Suntour 68mm x 115mm Grease Guard Spindle. New, $100.00/each

Embossed on the spindle: ML-SL-68

Ready to go to work

The other side of the spindle

Angled view

Beautifully made

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SunTour Superbe Pro BB-91 spindle, 68 x 112mm. New, $100.00/each

As nicely made as any bike part, ever.

Here's the other side of the spindle

End-on view

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SunTour WTB Grease Guard Microlite English (1.37 x 24) bottom bracket cups. New, $65.00/set

• The cups are aluminum with steel races pressed in.
• Bearings are 3/16"

Beautifully made

The business side of the cups

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SunTour Superbe Pro SB-11 English threaded (1.37 x 24) Cups. New, $100.00/set

Here are the tops of the cups.

The insides of the cups.

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SunTour Grease Guard bottom bracket sleeve. New, $10.00/each

• We have one in stock.

Close-up

From a different angle