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Dura Ace vs. Record
These products are the “top of the line”
offering for each company, and therefore carry
an immediate premium price for this distinction.
The primary mechanical difference between these
two groups is in material selection. Campy uses
carbon fiber in the levers, bottom bracket
shell, and rear derailleur. On the other hand,
Shimano uses plastic in the levers and aluminum
in the BB and rear mech. A look at the table
below shows that the overall mass difference
between the groups (the only clear cycling
performance evaluation criteria for component
groups) is within 60 grams.

The largest question that must be answered when
deciding between these two groups is whether or
not 60 grams, the Campagnolo name, and some bits
of cosmetic carbon fiber are worth $400. To a
lot of people, the answer to this question is
yes.
Shimano Line
Shimano offers a total of five different price
points within their component group product
line. Below are the mass tabulations for each of
the top three offerings.

The primary difference between these three
levels is in material selection and surface
finish. The Dura Ace product appears to use
higher strength aluminum in its crank, and
higher strength steel in its bottom bracket
spindle. This assumption is based on the
consistent outside dimensions of the Dura Ace,
Ultegra, and 105 designs but thinner walled
constructions for the higher end product. It
also assumes that Shimano engineers decided not
to sacrifice strength on their high-end parts in
exchange for lighter weight. The table below
summarizes the other differences between the
various groups.

Most of these design features above are done for
mass reduction and improved durability claims.
The difference between 105 and Dura Ace in mass
is slightly less than 500 grams. In this
author’s experience, the durability differences
between Dura Ace and Ultegra are not significant
even when little maintenance is performed (105
parts have lasted the author ~60,000 kilometers,
DA parts have lasted ~80,000 km and Ultegra
parts – minus a failed crank spline – have
lasted 35,000 km). The previous groups the
author has owned have either been put on a
winter bike or have been replaced out of sheer
vanity/group consistency. The parts that tend to
wear out independent of the group selected are
the chain, rings, sprockets, shift lever return
springs, and cables/housing.
Essentially, Dura Ace demands a higher price due
to lower mass (thanks to bits of titanium,
higher strength steel and aluminum), aluminum
anodizing, and the exclusivity of owning the
best that Shimano has to offer. If the stigma
associated with owning “low end” components is
too much to overcome for the consumer, the
Ultegra line becomes an attractive offering from
Shimano.
Campagnolo Line
Consistent with Shimano, Campagnolo offers
multiple price points for the consumer. For the
“mass freaks”, the table below lists claimed
manufacturer mass for the top three component
groups.

Again, the primary differences between the three
offerings from Campagnolo are in total mass and
the materials used to achieve this mass savings.
The Record group uses bits of carbon fiber and
titanium to save the consumer 355 grams over the
Daytona group. The price per gram saved over
Daytona for the Record group is over two times
that of the Dura Ace premium up charge. After
reviewing Campagnolo literature it was difficult
to find any significant design difference
between the Chorus and Daytona groups.
Therefore, it is difficult to justify the $300
price difference between Daytona and Chorus for
a measly 74-gram mass reduction.
Summary
The Campy versus Shimano topic is a debate that
will continue on for the life of both companies,
and it essentially boils down to personal
preference based on perceived value. Each
company offers multiple price points to satisfy
any would-be consumer. Higher end groups demand
premium prices due to material selection (which
leads to lower mass), surface finish,
manufacturing methods, and the exclusivity
associated with owning “the best”.
The top of the line offering from either company
still provides the same basic functions of
transmission, steering, and braking for
bicycles. Dura Ace and Record groups have nearly
identical mass, but Campagnolo is betting that
the perceived benefits of its brand name,
cosmetic carbon fiber and serviceable levers are
worth the extra $400 over Dura Ace. Durability
of all of the components seems to be adequate
independent of brand/position in the product
line (the crank designs could be improved in
either of the product lines). If the purchase of
perceived “low end” components is out of the
question, the Shimano Ultegra group appears to
be the most attractive offering with its $650
price tag. In either case, the consumer can rest
assured that both of these companies will stand
behind their product during the warranty period.
In the end, one must remember that these are
just bike parts, and that the immortal words of
Tyler Durden apply in full: “you are not the
contents of your wallet” - nor are you defined
by the component group you choose.
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