Marine Gearboxes

BPMBPM/Arneson Replacement QC

BPM Drop Box

14 Inch (358MM) Dropped Center Line

Dry Sump Standard!

Custom Input Flanges Available Upon Request

In Stock for Immediate Delivery

Shelf Gearing From .8 Overdrive to 2.22 Underdrive in 3% Increments.

33 Ratios Stocked

 

 

Shiftable Marine CrashboxShiftable Crashbox

FINALLY, A BOLT IN REPLACEMENT FOR YOUR WEAK LINK, THE TROUBLESOME BORG WARNER 72C

Stronger!  Used by all the top blower motor off shore teams for over 10 years without a single failure.

Faster!  Scs developed drop out technology in our crashboxes.  Since then, all catamarans are a minimum of 3 ½-mph faster.  We have had reports of up to 10-mph faster in some borg warner applications.

VIRTUALLY MAINTENANCE FREE!
Can be used with any 4 inch marine bellhousing, cooler style or not.

Will accept newer, dual starter bellhousings.

Available in 1350 or 1480 output flanges.

Available with scs tailstock that makes the unit the same length for existing boats with 72c and mercury #6 tailstocks.

Can be used with a mercury #6 tailstock, but is 31/2 inches longer.

Does not need a transmission cooler!

Does not use a drive plate!

Comes complete with flywheel!

Competitively priced!

 

 

Zero Drag TransmissionZero Drag Marine Mercury Input

Since 1990, SCS has produced a Crashbox that has stood up to the Blown Motors when the “Daytona Style” could not.

In 1998, the unit was modified by Mike Sage, owner of SCS, to stop the internal gearing from turning in the Forward Position. Net gain was about 4 MPH on virtually every catamaran when they replaced the Standard SCS Crashbox or the Daytona.

In the fall of 1999, Mercury Racing dropped the Daytona crashbox and now buys SCS Zero’s for all their crashbox needs! It is available with 1480/1510 Large Flange or 1350/1410 Small Flange Outputs. Custom Inputs available for Turbine applications with brake rotor hubs.