Goodridge Shimano Deore M515/525

Advantages: See text
Disadvantages: See text

...Shimano Deore is the main manufacturer of biking gear components. With them being the main manufacturer they will obviously more established and well known. Shimano Deore is the better part of Shimano's gearing. They have the SIS gearing which is lower quality. The models of the Deore range is; Deore, LX, XT and XTR. With the kit's getting better as you read them. I currently have a LX rear derailleur. You are probably thinking what is better in the different models. Some people don't really care and they just want the best model they can buy. All of the rear derailleur is covered to prevent and muck and sand to get into it and wreck it. The best part of the Deore range is that when you are going up hill's or you just need to change down a gear quickly, they don't jump, forcing you to not pedal really quickly, this is really... Read review

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Advantages: Cheapish
Disadvantages: Heavy, Poor durability

...cassette, I was stuck with having to get off to go up hills due to the horrendous banging and slipping coming from behind me. And the bike wasn't too happy either. So then, off to buy a new cassette. At the time, the Deore was all I could afford. It's a fairly substantial piece of kit. Many high end cassettes have fairly little metal in them, the sprockets being held together by plastic spacers. On this one, you've got no such luxury. Everything is metal. Fortunately, not solid metal, but still rather a lot, and it can add quite a bit to the weight of your bike. Anyway, the upshot is that my bike didn't skip when I pedalled. Nice. Now the downside. Having just had a peek at it, the teeth are starting to wear at an alarming rate. I've had it about four months. Granted, it's been ridden in some rather bad conditions. My local... Read review

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Advantages: built in external BB, good quality
Disadvantages: None

...I bought this to replace the SR Suntour cranks and stock Shimano Bottom Bracket on my Trek 4300. A fantastic upgrade, extremely sturdy, nice stiff cranks, excellent machine work. And to top it off, no internal Bottom Bracket is needed. Something I dont think a lot of the adverts for the item make enough of. You don't need to bother measuring your spindle as you just need to remove the entire bottom bracket and fit the M532 with the inbuilt external BB. You will need additional tools to fit this, but they can be picked up relatively cheaply and you never need to worry about wearing out any bearings in the bottom bracket again. It took me 15 minutes to fit, simply remove your old cranks, remove the BB and slot this in place. It comes with various spacers to adjust the width depending on your frame size and once fitted it... Read review

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