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Sorry, this Klein Quantum 53cm Bike - 1990 has been sold.

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Klein Quantum 53cm Bike - 1990

Item #BRD10225

Condition: Pre-Owned

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Specifications

Details

Year	1990
Brand	Klein
Model	Quantum
Size	53cm
Frame Material	Aluminum
Weight	20 lbs 5 oz

Build

Fork	Klein, Steel
Brakes	Shimano Dura-Ace 7400, Caliper - Side Pull
Shifters	Shimano Dura-Ace 7400, Mechanical
Front Derailleur	Shimano Dura-Ace 7400
Rear Derailleur	Shimano Dura-Ace 7400
Crankset	Shimano Dura-Ace 7400, 52/42t, 170 mm
Cassette	Shimano 600 6200, 6spd, 14-25t
Chain	Sachs
Handlebar	Sakae CT, 42 cm
Headset	Shimano Dura-Ace 7400
Stem	Sakae Ringyo 25.4 mm x 100mm, 17°
Seatpost	Rind Excel, 27.2mm
Saddle	Bontrager Affinity 3
Wheelset	Mavic MA40, Specialized
Front Tire	Michelin Krylion, 700C x 23c
Rear Tire	Michelin Krylion, 700C x 23c

Geometry

Recommended Rider Height	N/A Sizing Guide
a. Effective Top Tube	547 mm
b. Seat Tube	530 mm
c. Seat Tube Angle	74°
d. Head Tube Angle	73.5°
e. Head Tube	108 mm
f. Stack	N/A
g. Reach	N/A
h. Standover Height	790 mm
i. Saddle Height Range	N/A

Klein Quantum 53cm Bike - 1990

Item #BRD10225

Condition: Pre-Owned

SHIPPING & ASSEMBLY

OUR GUARANTEE

RETURNS

Sizing Guide

The chart below provides a general suggested range of heights and is not exact. Sizing may vary across brands.
+ Read more

The tailoring of any bike is an important step in the long term enjoyment of riding and it can take time to adjust to the fit of a new bike. All contact points (pedals, shoes, and saddle) can be changed and altered for personal preference, performance, and comfort.

Sizing Guide
Measured Frame Size	Frame Size	Min Rider Height	Max Rider Height
48cm	XS	4' 11"	5' 2"
50 cm	Small	5' 2"	5' 5"
52 cm	Small/M	5' 5"	5' 7"
54 cm	Medium	5' 7"	5' 10"
56 cm	Large	5' 10"	6' 1"
58 cm	Large/XL	6' 1"	6' 3"
60 cm	XL	6' 3"	6' 5"

Contact our Ride Guides if you have any questions about the fit of your new bike.

866.401.9636 - Contact the Ride Guides

Condition Rating Guide

Our experts inspect each bike and rate its components on a scale of 1-10. The condition chart’s Overall Rating is the average of those individual components, helping you tell how much overall wear a bike has. We don’t sell anything that scores below a 7. Along with the condition chart, look closely at the bike’s detail images, which highlight any wear or damage.

10/10 Like-New:

These bicycles are good as new, often built right out of the box from the manufacturer. Original stickers, parts, and accessories are included. The frame and wheels might have minor blemishes or scuffs from transportation or showroom display. Drivetrain, levers, cockpit, and suspension (where applicable) are in new condition.

9/10 Excellent

While these bikes have been ridden, they remain in excellent condition. Frame and wheels show slight signs of wear with only minor scuffs and scratches — no paint chipping. The drivetrain shows light wear but the derailleurs, shifters, and levers have not sustained any damage. The cockpit has light wear, primarily on the grips or handlebar tape. Bikes with suspension components have minor scuffs and scratches on the fork legs and shock, and the stanchions are immaculate.

8/10 Very good

To earn a rating in this range, bicycles have sustained some wear but no significant damage. The frame will have slight paint loss, scratches, and/or scuffs. Wheels will also have minor cosmetic damage on rims, spokes, and/or hubs. The drivetrain will have wear from normal usage and there will be slight scratches and scuffs on derailleurs, shifters, and levers. Cockpit, saddle, and suspension lowers (where applicable) will also have cosmetic scuffs and scratches.

7/10 Good

Bikes in this range are well-loved and have moderate wear. While the frame and wheels will have cosmetic scuffs, scratches, and/or paint loss, they will not be structurally damaged. Aluminum, steel, and titanium frames may have minor dents. Carbon frames may have been previously damaged, but have been professionally repaired and are structurally sound. Aluminum rims may have minor dents. The drivetrain has moderate to heavy wear. Handlebars, stem, derailleurs, and levers show moderate scuffing or scratches, and the saddle might have slight tears. If the bike has suspension, those components will have scratches and scuffs. The stanchions may have small scratches.

6-1/10 Average

We do not sell bikes that we rate lower than 6 on the condition scale. For example, this includes bikes with major dents, carbon fiber damage, excessive drivetrain wear, and/or moderate to significant suspension component wear.