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Yoshimura RS-4 Pro-Series Exhaust System w/Titanium Muffler - 2258167

  • Part #:
    435251
  • Manufacturer Part #:
    2258167
This item is no longer available
Overview of Yoshimura RS-4 Pro-Series Exhaust System w/Titanium Muffler - 2258167
  • Delivers huge power at a very light weight
  • Lower centralized mass coefficient improves handling
  • Pro-Series features a titanium header construction;Competition Series features stainless steel header construction
  • Tapered head pipe delivers optimal flow and performance
  • Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
  • Two-staged, stepped baffle
  • Pro-Series features carbon fiber or titanium, muffler sleeve; Competition series features aluminum muffler sleeve with brushed finish
  • For 96db spark arrestor use 43-5589; for 94db insert use 43-5560
  • 99 dB muffler insert available separately from Yoshimura


Included Items:
(1) Muffler assembly w/sleeve
(1) Flange
(1) Manifold
(1) Header
(1) 8mm Large washer
(1) Aluminum spacer
(1) 8mmx35mm Flanged hexhead bolt
(1) Medium exhaust spring
(3) Small exhaust springs
(1) Aluminum bracket rubber grommet
(1) Insert kit
(1) Spring puller tool
(1) Offroad endcap plug
(1) Yoshimura vinyl sticker
(1) Instructions

Specs for Yoshimura RS-4 Pro-Series Exhaust System w/Titanium Muffler - 2258167

Color - Primary Silver
Style Canister Muffler
Type Complete System w/o Spark Arrestor
Units Each
Weight 11.45 lbs

Alternate/OEM Part Number(s):

18201127
Specs for Yoshimura RS-4 Pro-Series Exhaust System w/Titanium Muffler - 2258167
Color - Primary Silver
Style Canister Muffler
Type Complete System w/o Spark Arrestor
Units Each
Weight 11.45 lbs
Fitment for Yoshimura RS-4 Pro-Series Exhaust System w/Titanium Muffler - 2258167
See if this part fits your ride

Part 435251 fits the following machines

Honda
  • 2012 Honda CRF450R
  • 2011 Honda CRF450R
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Instructions and Manuals for Yoshimura RS-4 Pro-Series Exhaust System w/Titanium Muffler - 2258167