FSA 15mm ISIS Crank Bolts

Advantages: LightWeight, indestructible, good price
Disadvantages: not the Cheapest of Cranks

...it incredibly strong plus the fact the bash ring is about 1/2 an inch think. The cranks are cnc machined from one piece of aluminum making them incredibly light. Ridding with these cranks is a delight the power transfer is great as the crank and chain ring and bash ring are so solid there is no flex in the arms and the bash ring is low profile so gives you that little extra clearance but yet protects your chain perfectly. The Cranks come in wither taper or Isis fitting, Isis is a great as no matter how hard you tighten the bolt, once you want to remove the crank remove the bolt and generally just give the crank a tap and off it comes. The Most amazing thing however is that these cranks have a lifetime warranty, even stated for trials or Downhill use. There so confident that there indestructible. I smashed them some many times onto concrete... Read review

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Advantages: Cheap, extremely durable, abuse tolerant
Disadvantages: Poor crank choice, may not be suitble for extreme use

...What's this? It is a JIS square tapered BB. And in english... BB - bottom bracket. Screwed into the frame and serves as a mounting point for your cranks. Square taper - Axle shaft of the bottom bracket is tapered. The shaft is wider at the base than it is at the tip, so it ensures a very tight fit when the crank is tightened up. It fits square holed cranks only. JIS - Japanese International Standard. This is a measure of the degree of taper. There is also the ISO standard used by European manufacturers, such as Campagnola. The vast majority of mountain bike cranks are JIS. An ISO crank may or may not fit a JIS square taper BB depending on the tolerances and amount of wear. Evolution or Devolution? In the last few years BB's have undergone something of a revolution. Octalink from Shimano, ISIS from the others... Read review

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Advantages: Lightweight, good quality components
Disadvantages: A lot of money

...on the familiar bike websites lets me know that they are a 4.5/5 and an excellent multi-condition performer. Not bad. -Derailleurs- Front – Shimano Deore Rear – Shimano Deore XT Derailleurs are the things that move the chain from gear to gear when you want to change them! Shimano are cracking and I can’t really fault these. They are perfect middle of the range and are great at what they do. They are also very simple to set up and maintain. -Grips- Kona Jackshit These grips are made from a relatively soft compound of rubber and have lasted me for a year of riding almost every day. Perfect. Parts list: Frame tubing - Kona All-Mountain Butted Aluminum Fork - Marzocchi MZ Race Braze-ons - 2 x bottles, rack, fenders, disc tabs Headset - TH Crankarms - FSA Alpha Drive ISIS Chainrings - 44/32/22 B/B - RPM ISIS Pedals - Shimano PD-M505... Read review

Ciao members have rated this review on average very helpful