ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS
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ENGINE EXPANSION KIT for BIG TWIN FRAME JIGS

Regular price
$800.00
Sale price
$800.00
Regular price
Sold out
Unit price
per 

8/31/22: LEAD TIME 6-8 weeks to ship.

 

Expand the versatility of your frame jig with these Sportster/Twincam fixtures for your frame jig.

Sportster:

  • Fits rigid Evo sportsters 86-03 (minor modification may be necessary for 86-90)
  • Includes 2 riser assemblies. Stock frame (for doing hardtails/mods) and center upright (for building Big Twin or other style frames)
  • Includes front motor plate fixture. This allows you to build frames that use the stock front motor plates OR a custom frame that uses your own plate design (or maybe no plates at all!)
  • Bolt on reference plates for bottom end clearance
  • Rear alignment bushings and hardware included
  • Does NOT include cardboard reference print at this time.

Twin Cam:

  • Fits Touring/FXR 99-16
  • Fits Softail 00-17
  • Includes center riser assembly with pass thru provision for single loop frame
  • Reference plates Engine/transmission/oil
  • Includes reference print for frame mockup
  • Includes hardware

CTNEWMAN'S thoughts on Twin Cam engines:

Coming from the traditional shovelhead and earlier chopper scene, I always ignored anything that was newer because it seemed complicated/difficult/uncool/etc.  As I've been digging into the Twin Cam world a bit while designing these fixtures, here are a couple of facts about them that actually could lend them being used in cool custom bikes.  Might be very obvious for some, but not for others.

  • Kick start exists for softail/touring transmission up to 2006
  • Magneto conversions available (evo style and even points conversions available, too)
  • Carbs were used up to 06
  • Touring/FXR bikes have engine oil pan integrated below transmission!
  • Simple mounting.  Really easy to build frames. Twincam engines and transmissions bolt together (think sportster but it can come apart) No need to have a rear motor mount/front trans mount (or even a seat tube).  Softail motors have two cross bolts in the front and one in the rear.  Touring/FXR motors have a standard front motor mount and a single cross bolt in the rear.
  • Softail motors have balance shafts and run REALLY smoothly. Maybe that's a con to some of us.
  • Parts availability.  Newer motor, obviously easy to get parts.
  • Reliable.  There is a cam tensioner update required on earlier years, but once that's complete these motors will run long and hard.
  • Motor availability and cost.  You can pick up twincam motors for the cost of a nice 4 speed TRANSMISSION.  I'm serious.  I have seen complete motor/trans sets for 1200 bucks pulled from running bikes.
  • Touring/FXR motors can be rubber mounted, but, like, why bother.

I think if I were going to build a Twin Cam chopper, I'd get a pre 06 Touring/FXR motor.  Rigid mount the front (standard HD front mount) and rear (simple cross bolt).   I'd toss on a kicker kit and a magneto.  It has the oil tank built into it.  I wouldn't run a battery.  Rig up a foot clutch hand shift. Wiring/hoses? Have one a wire that runs to headlight/taillight, a throttle cable and a fuel hose and THAT'S IT. 

Sounds pretty chopper if you ask me.

Available exclusively for owners of our BIG TWIN FRAME JIGS.  Not available individually.