6-Speed Freewheel MAILLARD COURSE 1979 14-28 Vintage 34.7x100 RC51

The MAILLARD COURSE 6-speed freewheel is a French-made unit dated 1979, and its 14-28T spread sits at the heart of what made the COURSE line a fixture on period racing and touring builds. Six sprockets on a 34.7x100 fitting give you the same geometry many European framesets of the late 1970s were braced for, so the part drops into the era rather than being adapted to it.

What sells this freewheel is its numbers. A 14-tooth small sprocket is the fast end of a racing cassette of its day; the 28-tooth large sprocket opens up the climbing range that touring riders actually wanted. The steel body is the reason these units have outlasted so many lighter alternatives in workshops, and it is also why they carry a bit of honest weight.

Photos are part of the description, and they are the best guide to what you receive. As with any used freewheel that has sat in storage, expect minor cosmetic marks and traces of use — micro-scratches, that sort of thing. No oxidation is noted on this item. Note that MAILLARD's factory part number for this freewheel is recorded as 0000, and the locating code RC51 shown in the title belongs to our stock reference, not to the part itself.

A 1979 drivetrain component worth bolting onto a period build

If you are restoring a late-1970s French or European road frame, or assembling a machine for Eroica-style events, the freewheel is one of the few parts where the original ratio range still matters. A 14-28 six-speed unit answers both the flat-road rider who wants that tall top gear and the touring rider who needs the 28-tooth bail-out on a long climb. Steel, six speeds, 34.7x100 — nothing superfluous.

For a complete period drivetrain, see our 6-Speed MAILLARD SUPER 700 Freewheel 13-28 or, if you are working on the wheel side, our MAILLARD 5-Speed Freewheel 14-26. Chainsets, grips and other finishing parts live in the chainsets category.

Key specifications

• Type: Freewheel — cassette, 6 speed
• Ratio range: 14-28T
• Fitting: 34.7 x 100
• Material: Steel
• Country of origin: France
• Oxidation: None
• Manufacturer part number: 0000
• Stock reference (title code): RC51

Condition notes

Used vintage component. No oxidation is recorded for this item; only the usual light cosmetic marks and micro-scratches associated with storage and prior use are to be expected. Photos are part of the description and show the actual unit offered.