Skip to Main Content
Free Shipping
over $39.99

Orders $39.99 or more ship free within the contiguous U.S.

Free Shipping Policy
Self-Service
Returns

Doesn't fit? Don't love it?

Return any unused item within 30 days for a full refund.

Start a Return
Read our full Return Policy
Lowest Price,
Guaranteed

Found it for less?

RevZilla will match any advertised price on new merchandise available through another authorized U.S. dealer.

Submit a Price Match

Elite Service Rating

Our goal is to provide the best possible shopping experience to every enthusiast who visits RevZilla.

See what our customers are saying about us:

Customer Reviews

ZillaCash Rewards Program

Earn $5 for every qualified $100 you spend. You'll also hear about special offers and events! How it works:

1

Sign in or create an account to earn ZillaCash on your next purchase with us.

2

Earn $5 for every $100 you spend on eligible items and brands.

3

Redeem your ZillaCash Rewards on a future order with us!

See our customer service page for more details.

2019 Honda CRF450X MUFFLER OEM Parts Diagram

Diagram: F539279
The products below will fit your 2019 Honda CRF450XAC Select a Different Bike
# Item Price Suggested
Qty The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Quantity
1 GASKET, EX. PIPE
18291-MEB-670
$3.67
$4.27
Suggested Quantity 2 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
In Stock: Ships next business day
2 MUFFLER ASSY.
18300-MKE-A41
$1,131.05
$1,190.58
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
3 CAP, TAIL
18306-MKE-A50
$85.24
$89.73
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 6-8 weeks of lead time prior to shipment
4 ARRESTER, SPARK
18317-MKE-A41
$52.58
$55.35
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
5 PIPE, EX.
18320-MKE-A40
$170.71
$179.69
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Out of Stock
6 PROTECTOR, EX. PIPE
18323-KRN-A80
$42.75
$45.00
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
7 STAY, EX. PIPE PROTECTOR
18327-MKE-A40
$7.48
$7.87
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
8 STAY, RR. EX. PIPE PROTECTOR
18328-MKE-A40
$8.15
$8.58
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
9 GUARD, HEAT
18340-MKE-A40
$39.99
$42.09
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
10 RUBBER, PROTECTOR MOUNTING
18345-MBT-610
$1.47
$1.71
Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 2-3 business days of lead time prior to shipment
11 BAND, R. MUFFLER
18373-KE8-000
$23.31 Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Unavailable
11 BAND, R. MUFFLER
18373-KE8-000
Occasionally manufacturers will replace a part with an updated version. The new part has the same fitment and usage specs and will properly fit this assembly. Supersedes 18374-MG7-701
$23.31 Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Unavailable
12 GASKET, MUFFLER
18392-MK4-000
$9.63
$11.47
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 1-2 weeks of lead time prior to shipment
13 NUT, SPRING (6MM)
19508-KA3-710
$4.41
$4.80
Suggested Quantity 2 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 6-8 weeks of lead time prior to shipment
14 CLAMP, R. RADIATOR HOSE
19509-MM5-003
$9.58
$11.40
Suggested Quantity 2 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 1-2 weeks of lead time prior to shipment
15 RUBBER, SIDE COVER (PD)
83512-KA4-700
$3.52
$3.84
Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 6-8 weeks of lead time prior to shipment
16 BOLT, FLANGE (6X10)
90101-KCE-000
$1.17 Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Unavailable
16 BOLT, FLANGE (6X10)
96001-06010-07
$1.01
$1.18
Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 2-3 business days of lead time prior to shipment
17 BOLT, SPECIAL (5X12)
90101-MKE-A00
$1.45
$1.53
Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
18 BOLT, FLANGE (8X40)
90108-MKE-A40
$3.33
$3.51
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
19 BOLT, FLANGE (8X25) (SH)
90109-MKE-A50
$2.70
$2.84
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 6-8 weeks of lead time prior to shipment
20 BOLT, FLANGE (8X20) (SH)
90110-MKE-A50
$2.64
$2.78
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
21 SCREW, PAN (6X12)
90113-KTA-920
$1.65
$1.73
Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
22 BOLT, SPECIAL (6MM)
90170-MEB-670
$1.23
$1.35
Suggested Quantity 2 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 1-2 weeks of lead time prior to shipment
23 NUT, FLANGE (8MM) NUT, FLANGE (10MM)
94050-08000
$0.60
$0.70
Suggested Quantity 2 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
Available: Requires 2-3 business days of lead time prior to shipment
24 WASHER, PLAIN (5MM)
94101-05400
$0.68
$0.72
Suggested Quantity 3 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
25 WASHER, PLAIN (8MM)
94102-08400
$0.61
$0.64
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
26 WASHER, PLAIN (8MM)
94103-08400
$0.74
$0.78
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
27 WOOL, GLASS
18334-MKE-A40
$31.92
$33.60
Suggested Quantity 1 The number of times each part appears in the diagram. Not replacing everything? You may need fewer than suggested.
View Availability
Montgomeryville Cycle Center www.montgomeryvillecc.com Honda OEM Parts On RevZilla - Powered and Sold by Montgomeryville Cycle Center. RevZilla has partnered with Montgomeryville Cycle Center to offer you a next generation shopping experience for OEM parts.

The same great policies and service you have come to expect when shopping on RevZilla.com will apply to any OEM purchases made online.

RevZilla is proud to carry every original part available for your 2019 Honda CRF450X MUFFLER assembly. Simply reference the OEM parts diagram to confirm the exact part numbers you need. If the assembly calls for more than one of any given part number, it will be noted for you in the suggested order quantity so you can get exactly what you need to get the job done right, the first time. Not quite sure? Feel free to shoot us an email or give us a call to get hands-on help from an OEM parts expert.