American Classic ISIS Bottom Bracket Bottom Bracket

2/5 (3 Reviews)

Product Description

American Classic’s ISIS bottom bracket is light because of the unique split ring design (patent applied). The new and improved split ring and cups support the bearings and keep them in place. The steel bottom bracket axle is designed to distribute the stress loads applied when riding. Replaceable stainless steel bearings are standard.

Also available with chrome steel bearings by special order for OE use only. Smooth ride feel. A proven design.

WEIGHT 108mm 140 gr 113mm (68mm/73mm) 153 gr 118mm (68mm/73mm) 157 gr BEARINGS 6804 Modified Stainless Steel TOOLS NEEDED Truvativ X-Tool or Park BBT-8, Torque Wrench TORQUE SPEC 25-30 Foot Pounds each side. 15mm Steel Crank Bolts are not included

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Reviews 1 - 3 (3 Reviews Total)

User Reviews

Overall Rating:1
Value Rating:1
Submitted by CB2 a Racer from West Hartford, CT, USA

Date Reviewed: December 28, 2009

Strengths:    Light

Weaknesses:    Self destructs

Bottom Line:   
I bought it for it's light weight, and replace-able bearings, but replace-able bearings are of no use when the installed bearing self destructs, and shears the bottom bracket fixing cup flange off in the shell. Expensive lesson.

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Duration Product Used:   6 months

Price Paid:    $100.00

Purchased At:   CBO

Similar Products Used:   FSA,

Bike Setup:   Singular Swift, Raceface Turbine LP ISIS cranks

Overall Rating:4
Value Rating:4
Submitted by funnytanlines a Cross Country Rider from philippines

Date Reviewed: December 3, 2008

Strengths:    light weight (around 145g for road, 160g for mtb)

Weaknesses:    none yet. possibly breaings in the future but so far so good.

Bottom Line:   
got it for the weight savings. the amclass isis bb is 50-100g lighter then most other isis bb's. my road set up weighs less then most higher end cranksets with integrated bb's at half the cost.

Expand full review >>

Duration Product Used:   6 months

Price Paid:    $50.00

Similar Products Used:   truvativ sl, truvativ gigapipe, fsa ultimax

Bike Setup:   mtb: single speed, using truvativ firex crank
road: fsa carbon caompact crank + ultegra/dura ace

Overall Rating:1
Value Rating:1
Submitted by kester stancer a Weekend Warrior from sheffield uk

Date Reviewed: March 26, 2007

Strengths:    light weight

Weaknesses:    very noisy

Bottom Line:   
this bb might be light but the cups creaked,the axel/crank interface was too tight,the bearings were so notchy you could actually count the number of bearings by feel!
absolutely awful.then after about 6 months,the bearings came off whilst fitting.went straight in bin.most expensive truvative bb tool ever(came supplied with bb)

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Favorite Trail:   green drive

Duration Product Used:   6 months

Price Paid:    $100.00

Purchased At:   super cycles

Similar Products Used:   fsa platinum ti

Bike Setup:   haro ex1,am3,xtr,magura,fsa

Reviews 1 - 3 (3 Reviews Total)

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best Isis bottom bracket

looking to replace worn out Isis BB on my surly 1x1 any suggestions on a good one for single speed use? maybe one with two bearings on drive side or not necessary? its an old race face turbine cranksetRead More »

ISIS bottom bracket upgrade to external type?

Bike is 2006 Marin Rift Zone mountain bike. It came with ISIS bottom bracket (68mm and 113 spindle) and FireX Truvative crankset (3x). The bottom bracket is creaking and moaning so will replace soon. Question is do I replace with same type, such a Truvativ Gigapipe, or could I upgrade to external t ... Read More »

2009 Reign X bottom bracket spindle length (ISIS).

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Isis bottom bracket overhaul

So I pulled this bottom bracket out of a frame I recently bought. I think its been in there a while, my guess years. It seems alright though, still spins, but it is a little rough. If I can I definately want to salvage it cause I'm on a tight budget with a DH build I'm doing. So I want to over haul ... Read More »

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