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Wednesday Weights!

Here is your next installment of Wednesday Weights, where all you have to do is guess the weight of the product we weigh! The closest guess wins a prize. This week, another legendary Koo-bikes T-shirt will be won by one lucky person! The competition will close on Friday and we will reveal the winner and actual weight. Guesses should be to the closest 0.01grams.

Please post all answers on our Facebook page, where this competition will be posted.

This week you have to guess the weight of a Basil Wicker Dog basket and optional cage, containing a TSG Nipper Mini Helmet and box…. good luck!



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Sram Red 2012/13 Groupset has landed!!!

Koo bikes are lucky enough to have one of THE first Sram Red groupsets in the country. Over the next month only 60 will be available in the UK, so be quick, blink and it will be gone!

If you want to have a sneaky peak at it, pop down to Cogs-Bikes  in Plymouth where it will be displayed.

Be one of the first to own the new Sram 2012/2013 Red Groupset! Simply the best groupset out there, coming in around a pound lighter than Dura Ace!

To buy the groupset, visit our website HERE

The Groupset is complete and contains the following;

SRAM RED 2012/13 Crank Set Exogram GXP 172.5mm 53-39t
SRAM BB GXP BlackBox Cups w Ceramic Bearings English MTB & Road 73/68
SRAM RED 2012/13 Shift/Brake Lever Set EgroDynamic 10-speed Rear Index Front
SRAM RED 2012/13 Rear Derailleur Aero Glide
SRAM RED 2012/13 Front Derailleur Yaw Braze-on with Chain Spotter
SRAM RED 2012/13 Brake Set Aero Link Front & Rear
SRAM RED 2012/13 Cassette XG-1090 X-Dome 11-25 10 speed
SRAM PC1091R Hollow Pin 10 Speed Chain Silver 114 Link with PowerLock

For a full low-down on all the new RED parts and revolutionary technology, check out here


New SRAM RED represents the pinnacle of road racing technology and delivers countless performance advantages to the professional and enthusiast alike.

For 2012/13, the new RED continues in the SRAM tradition as the leader in light weight, flawless shifting, and ergonomic advantage with gorgeous aesthetic styling.

How did we improve on the world’s best mechanical gruppo? We started with everything we knew, and then designed a brand new drivetrain from scratch.

Each part was engineered with the twin goals of eliminating the superfluous while focusing on an overall synergy that translates into unmatched performance.

Elegant and simple, RED perfects the riding experience through genuine innovation.

SRAM RED changes everything.

Koo Groupset weight = 1884.8g

SRAM RED Crankset – 2012/13

Innovation often comes from places you‘d least expect.

In order to make a lighter crankset, we made it bigger. To add stiffness, we used less material.

The new SRAM RED Exogram Crankset is completely hollow all the way to the spider.

Its hidden bolt pattern makes better use of carbon fiber to further improve stiffness and shed weight.

The stunning X Glide R chainrings are optimized for use with the YAW Technology in the front derailleur, delivering seamless, flawless performance.

Exogram technology uses a large, hollow cross section all the way to the spider, minimizing weight while maximizing stiffness. Our stiffest crank ever

Hidden bolt pattern leverages the characteristics of carbon fiber while presenting a sleek appearance

Stiffer X Glide R chainrings feature thicker construction, advanced shift timing pins and ramps, which are optimized for shifting with the YAW Front Derailleur

Stunning two-tone finish

Koo weight = 604.2g (53/39t)


SRAM RED BB – 2012/13

Welcome our new Gutter Seal Technology! Gutter drastically improves sealing against the elements while reducing seal drag.

We’ve designed a fresh new cup forging for a new high-end look. A new standard in external bearing performance!

Gutter Seal Technology

Improved tool engagement

Sealed cartridge bearings

English or Italian threads

Ceramic bearings, Red ano finish.

Koo weight = 101.8g


SRAM RED DoubleTap® Controls – 2012/13

The new SRAM RED ErgoDynamic Shifters represent our most advanced thinking yet on perfecting the interface between rider and bike.

We‘ve scrutinized everything, including the transition between handlebar and hoods, the grip texture, finger wrap, and the separate interfaces with both the shifter and brake lever.

The result is an extremely comfortable, highly individual fit that makes the shifters feel like a natural extension of the rider.

ErgoFit textured body improves grip and finger wrap with reduced diameter, providing better control, and a better transition to the bar

Individual Reach Adjust of brake and shift lever, now easier to access and uses a standard hex key, puts the controls exactly where you want them

Larger carbon ErgoBlade lever improves shifting from the drops

DoubleTap® technology delivers both shifts from the single lever

ZeroLoss™ shifting, shifts engage immediately

New clamp allows better fit and adjust for modern carbon and ergo bars

Koo weight = 310.7g (inc. cables)


SRAM RED Rear Derailleur – 2012/13

If you want for the fastest, quietest shifting around, look no further.

The new SRAM RED Rear Derailleur has been designed to deliver the performance advantage you‘ve come to expect from SRAM.

The derailleur is designed with our Exact Actuation technology for precise, efficient shifting.

We‘ve paid rapt attention to the finer details, like adding a hollow titanium anchor bolt and even refining tooth geometry of the jockey wheel.

The result is that the chain runs through the new RED Rear Derailleur smoother and quieter than ever before.

Exact Actuation shifting provides fast, accurate shifts

More clearance with 28t cassettes thanks to longer B-knuckle

New silent shifting with optimized AeroGlide lower pulley, ceramic bearings

New spring-fixed barrel adjuster

New chain pulley cage adds precise chain management

Titanium pinch bolt keeps a low profile while minimizing weight

Koo weight = 145.3g

SRAM RED Front Derailleur – 2012/13

The new SRAM RED Front Derailleur changes everything.

Instead of simply moving back and forth, the derailleur cage actually rotates to maintain a consistent angular relationship with the chain.

We call it Yaw Technology, and it eliminates the need for shifter trim.

As a result, shifts feel more direct, more precise, and combined with the new RED crankset and chainrings, delivers an unmatched performance advantage in front shifting.

Yaw cage rotates in line with chain, improving the shifting speed and precision while eliminating the need for shifter trim

Slim spring design eliminates frame interference

Optimized for shifting with X GlideR Chainrings

Best combination of aluminum and steel for the strongest and most durable cage we’ve ever made

Precision install markings

Integrated chain spotter protects your frame without adding any extra clunk, and adjusts independently of the derailleur itself

Koo weight = 75.9g (braze on)

SRAM RED Brakes – 2012/13

Your brakes shouldn‘t slow you down until you squeeze the levers.

That‘s why the new SRAM RED Brakeset has been created with a host of wind-cheating features to make the brake body more aerodynamic, helping you keep your speed until the moment you‘re ready.

The new patented AeroLink arm reduces frontal area while improving braking performance and modulation.

The brake body has been sculpted to provide a sleek aerodynamic profile to the wind. Even the smallest details, like the barrel adjuster, point away from the wind.

And to finish off the package, SwissStop Flash Pro pads come standard with the brake. It‘s a better brake in every way.

AeroLink arm amplifies braking power while reducing frontal area

Aero design extends to the shape of the indexed four-position quick release, the bladed barrel adjuster, low-profile pinch bolts, and recessed spring tension adjusters

Wider clearance for modern wheelsets

Lighter, aero pad retainers carry SwissStop Flash Pro pads standard

Koo weight = 251.3g (pair)

SRAM XG 1090 Cassette

The new SRAM RED Powerdome X is the most advanced cassette ever made.

It‘s super light, deadly silent, and delivers an undeniable performance advantage.

The eight cogs in the middle are machined from a single block of high grade tool steel, increasing stiffness while weighing even less than a titanium cassette.

Between each cog in the block is a StealthRing elastomer to reduce vibration and noise.

Cutouts on the rear cog further reduce weight and add stiffness.

It‘s the final piece in the drivetrain puzzle, paired with the new SRAM RED Rear Derailleur, delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear.

Hollow steel dome makes for the stiffest gear cluster ever at the lightest weight

Heat-treated, high-grade tool steel provide superlative durability and a beautiful finish

StealthRing elastomers and advanced tooth profiles eliminate vibration and noise for a smooth, silent ride

Aluminum cog: lighter, stiffer, stronger due to the choice of design, material and production process

Koo weight = 146.3g (11 -25t)


SRAM PC 1091R PowerChain™

The newest 1091R chain features more heavily chamfered outer plates for improved shifting and quieter running.

Other advancements include a new inner plate finish plus chrome hardened pin construction, both for longer chain life.

The HollowPin construction of SRAM’s 10 speed PowerChain™ provides smooth, precise shifting and weight savings without sacrificing strength.

Koo weight = 249.3 (114links and

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Wednesday Weights

Here is your next installment of Wednesday Weights, where all you have to do is guess the weight of the product we weigh! The closest guess wins a prize. To make up for no Wednesday Weights last week, we decided to double the prize fund this week and have a £10 Koo-bikes voucher up for grabs! The competition will close on Friday and we will reveal the winner and actual weight. Remember all packaging has been removed, and guesses should be to the closest 0.01grams.

Please post all answers on our Facebook page, where this competition will be posted.

This week you have to guess the weight of a Sram Red Chainset 172.5mm 52-36t (no BB) , and a mug (empty) from our good friends at Fishers Outdoors… good luck!

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