Triple Tree Reversible Bottom Clamp 50/54 2.375" Upside Down Forks Conversion

$649.00
SKU
BP-636328
  • Clamps: 50-54mm
  • Offset: 2.375"
  • Spread: 207mm (GSX-R1000)

Brock’s Performance has professionally designed and fabricated V-Twin Triple Trees with Reversible Bottom Clamp which will allow conversion of select Harley-Davidson® FXR™, Dyna™ and Sportster™ forks to late model upside-down (inverted) sportbike forks to take your riding to the next level.

These triple clamps not only allow the use of readily available OEM forks (GSX-R1000, Hayabusa, etc...,) but also simultaneously add the ability to use corresponding wheels and brakes, increasing overall suspension performance and comfort while providing world class braking options.

Featuring zero (1-1) rake and the stock 2 3/8" Dyna offset (optional 1.7” reduced trail option available), we also accommodate the stock fork stops and lock (when possible).

Available in 50/54 with a 207mm spread (GSX-R1000) and 50/55 with a 214mm spread (Hayabusa).

See overview and technical tabs for more info. Proudly made in the USA.

  • Direct bolt-on triple clamp for popular Harley-Davidson® models
    (See product details tab for listing of known fitment applications)
  • Allows use of popular OEM upside-down (inverted) sportbike forks
  • Reversible lower clamp for maximum fork height adjustability
  • Lower clamp is tapped for fork stops and a clearance hole for headlight mounting
  • Accepts handlebars with a 3.5" center-to-center spacing
  • Threaded steering stem and jam nut to allow proper setting of bearing preload
  • Steering stem is threaded 5/8"-18 for steering stem bolt
  • Two (2) 5/16”-18 threaded holes for fork stops
  • One (1) 3/8” clearance hole for headlight mounting
  • Uses OEM H-D® (1" ID) bearings and seals (not included)
  • Stock Dyna™ offset of 2.375" for 18"+ wheels sizes
  • 207mm fork spread center-to-center (e.g. 2001-2006 GSX-R1000)
  • CNC machined 6061-T6 billet aluminum upper and lower clamps
  • 300 series stainless steering stem
  • All stainless steel hardware
  • Laser engraved logo
  • Natural finish
  • Weighs only 5.8 lb.
  • Designed, machined and assembled in the USA

Known Fitment Applications:

  • Harley-Davidson® FXR™ (87-94) (Including CVO)
  • Harley-Davidson® Dyna™ (90-17)
  • Harley-Davidson® Sportster™ (87-03)

All remaining years of FXR™, Dyna™ and Sportster™ will accept the clamp with small modifications. The clamp will also fit custom applications utilizing a 1” DIA Harley-Davidson® steering stem. This is a bolt on application for any frame with the fork stop on the front of the neck; all other frames will require a fabricated fork stop.

Triple Tree Weight Breakdown:

  • Upper clamp – 28.8 oz. (816g)
  • Lower clamp – 33.6 oz. (952g)
  • Steering stem – 26.4 oz. (748g)
  • Jam nut – 1.1 oz. (31g)
  • Hardware – 2.6 oz. (74g)

Total = 5.8 lb. (2.63 kg)

Brock’s Performance has professionally designed and fabricated V-Twin Triple Trees with Reversible Bottom Clamp which will allow conversion of select Harley-Davidson® FXR™, Dyna™ and Sportster™ forks to late model upside-down (inverted) sportbike forks to take your riding to the next level.

These triple clamps not only allow the use of readily available OEM forks (GSX-R1000, Hayabusa, etc...,) but also simultaneously add the ability to use corresponding wheels and brakes, increasing overall suspension performance and comfort while providing world class braking options.

Featuring zero (1-1) rake and the stock 2 3/8" Dyna offset (optional 1.7” reduced trail option available), we also accommodate the stock fork stops and lock (when possible).

Available in 50/54 with a 207mm spread (GSX-R1000) and 50/55 with a 214mm spread (Hayabusa).

See overview and technical tabs for more info. Proudly made in the USA.

  • Direct bolt-on triple clamp for popular Harley-Davidson® models
    (See product details tab for listing of known fitment applications)
  • Allows use of popular OEM upside-down (inverted) sportbike forks
  • Reversible lower clamp for maximum fork height adjustability
  • Lower clamp is tapped for fork stops and a clearance hole for headlight mounting
  • Accepts handlebars with a 3.5" center-to-center spacing
  • Threaded steering stem and jam nut to allow proper setting of bearing preload
  • Steering stem is threaded 5/8"-18 for steering stem bolt
  • Two (2) 5/16”-18 threaded holes for fork stops
  • One (1) 3/8” clearance hole for headlight mounting
  • Uses OEM H-D® (1" ID) bearings and seals (not included)
  • Stock Dyna™ offset of 2.375" for 18"+ wheels sizes
  • 207mm fork spread center-to-center (e.g. 2001-2006 GSX-R1000)
  • CNC machined 6061-T6 billet aluminum upper and lower clamps
  • 300 series stainless steering stem
  • All stainless steel hardware
  • Laser engraved logo
  • Natural finish
  • Weighs only 5.8 lb.
  • Designed, machined and assembled in the USA

Known Fitment Applications:

  • Harley-Davidson® FXR™ (87-94) (Including CVO)
  • Harley-Davidson® Dyna™ (90-17)
  • Harley-Davidson® Sportster™ (87-03)

All remaining years of FXR™, Dyna™ and Sportster™ will accept the clamp with small modifications. The clamp will also fit custom applications utilizing a 1” DIA Harley-Davidson® steering stem. This is a bolt on application for any frame with the fork stop on the front of the neck; all other frames will require a fabricated fork stop.

Triple Tree Weight Breakdown:

  • Upper clamp – 28.8 oz. (816g)
  • Lower clamp – 33.6 oz. (952g)
  • Steering stem – 26.4 oz. (748g)
  • Jam nut – 1.1 oz. (31g)
  • Hardware – 2.6 oz. (74g)

Total = 5.8 lb. (2.63 kg)

More Information
Brand Brock's Performance
Finish Stainless Steel
Manufacturer Part No. 636328
Fitment
  • 1987-1994 Harley-Davidson® FXR (Including CVO)
  • 1990-2017 Harley-Davidson® Dyna
  • 1987-2003 Harley-Davidson® Sportster
Additional Notes cc
Ships Within: 10+ Days

  • 1987-1994 Harley-Davidson® FXR (Including CVO)
  • 1990-2017 Harley-Davidson® Dyna
  • 1987-2003 Harley-Davidson® Sportster

Manufacturer's Warranty

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