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S&S CYCLE 865 BIG BORE KIT 650 RE 920-0145

Part Number: 09040054
S&S CYCLE
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SKU:
09040054
MPN:
920-0145
Condition:
New
Availability:
Ships Same Business Day
Weight:
6.65 LBS
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  • S&S CYCLE 865 BIG BORE KIT 650 RE 920-0145
  • S&S CYCLE 865 BIG BORE KIT 650 RE 920-0145
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MSRP: $875.95
Now: $788.36
Was: $875.95
— You save $87.59
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Description

The S&S Cycle 865 Big Bore Kit transforms your 650cc Royal Enfield into a genuine performance machine, delivering the displacement and power output you've been seeking without sacrificing reliability. By increasing bore diameter and optimizing the combustion chamber, this kit unlocks meaningful gains in torque and horsepower while maintaining the stock engine's proven durability. Whether you're building a custom cruiser or upgrading a daily rider, this is the foundational upgrade that makes every other modification worthwhile.

  • Displacement: 865cc
  • Manufacturer: S&S Cycle
  • Part Number: 920-0145
  • Platform: Royal Enfield 650
  • Type: Big bore kit
  • Material: Precision-forged internals
  • Installation: Professional fabrication recommended
  • Includes: Oversized pistons, rings, gaskets
  • Fitment: Royal Enfield 650 RE specific
  • Horsepower increase: Approximate 15%+
  • Torque increase: Approximate 12%+
  • CNC-engineered components: Yes
  • Quality standard: OEM-equivalent tolerances
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Specs

BORE SIZE METRIC:
90.00 MM
PRODUCT NAME:
PERFORMANCE KIT
COMPRESSION RATIO IMPERIAL:
11.0:1
STYLE:
BIG BORE
UNITS:
KIT
RIDING STYLE:
STREET
STROKE LENGTH METRIC:
67.80 MM
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Fitment

Fitment for S&S CYCLE 865 BIG BORE KIT 650 RE 920-0145

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Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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