| Year | 1990 |
| Brand | Klein |
| Model | Quantum |
| Size | 53cm |
| Frame Material | Aluminum |
| Brakes | Shimano Dura-Ace 7400, Caliper - Side Pull |
| Weight | 20 lbs 5 oz |
| 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 |
| Charger Included | N/A |
Trade-in, trade-up, or simply sell. Ride the bike you want, when you want.
Sell // Trade nowThe chart below provides a general suggested height of range for Road Bike sizes and is not exact. Sizing may vary across brands.
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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.
| 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 - rideguides@theproscloset.com
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.
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.
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.
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. Frames are not dented. Alloy 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.
We do not sell bikes that we rate lower than 6 on the condition scale. For example, this includes bikes with dented frames, carbon fiber damage, excessive drivetrain wear, and/or moderate to significant suspension component wear.
