FILE SERVICE MGR. MECHANIC SALES
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BONDED ALUMINUM SWINGARM INSPECTION
This is an important service bulletin affecting any Cannondale bicycle with a bonded aluminum swingarm.
See Fig. 1-1. This is not a recall. This type of swingarm was used on various model bikes in 1999 thru 2001.
Bonded aluminum swingarms can easily identified by the "egg crate" or "webbed" appearance of the cast front part
of the swingarm.
We are asking that anytime a Cannondale bike with a bonded aluminum swingarm comes into your shop for
service that you inspect it carefully for cracks. Cannondale has seen cases where these swingarms have cracked
at the areas indicated with arrows in the illustration. When inspecting any bicycle that is in for service, thoroughly
clean the swingarm and carefully inspect the ENTIRE swingarm for any crack. Be sure to inspect under bright
Bonded aluminum swingarms were used on the following Cannondale bicycles, framesets, and warranty
Fig. 1-1. Identification
RIGHT SIDE VIEW
Webbed or "egg crate"
style appearance on
both sides of swingarm
Riding with a cracked swingarm
could lead to complete failure with
risk of serious injury, paralysis or death.
Model Nam e
Model Num ber(s)
600, 700, 700SX, 900SL, 1000SL
700SX, 800, 1000SL
SUPER V ACTIVE
400, 500, 500 POLICE, 600, 700, 700SX, 800, 1000SL
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