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Pro X Connecting Rod Kit

Fits Your Machine

Displaying parts for your 1978 KAWASAKI KX250

Pro X Connecting Rod Kit
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Pro X Connecting Rod Kit

Fits: 1978 KAWASAKI KX250
Part# 1256370020 | Mfg Part# 03.4309

Our Price: $78.99

MSRP: $111.87 - You save $32.88 (29% off)

Get $3.95 in Quick Cash

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5+ In-Stock

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Additional Videos

ProX Premium Powersports Connecting Rods

Motorcycle Bottom End Rebuild | Part 1 of 3: Engine Teardown

Pro X 2 Stroke Connecting Rod

How To - Separate A Main Bearing From A Crankshaft

Motorcycle Bottom End Rebuild | Part 2 of 3: Crank & Bearings

Pro X 4 Stroke Connecting Rod

Motorcycle Bottom End Rebuild | Part 3 of 3: Final Assembly

RM YouTube Channel
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Details

    When your ATV, UTV, or motorcycle is due for a rebuild, trust Pro X Connecting Rods for the strength and precision your engine needs to run its best.

    Manufactured in Japan by industry leading OEM factories, the connecting rods in these kits are double forged, shot peened, and barreled to give you maximum consistency throughout the material and greatly increase the lifespan of the connecting rod. Pro X also designs precisely placed oil cutouts in their con rods to improve oil delivery to the lower crank and bearings, so all mating surfaces stay lubricated even during the most extreme operating circumstances. With this kit you’ll be good to go with a crankpin, big-end bearing, small-end bearing, and both washers.

    With Pro X’s exceedingly high-quality manufacturing techniques, count on these Connecting Rod Kits to outlast and outperform the competition for performance you can count on.

    Specs:
  • Double forged, shot peened, and barreled construction
  • Kit comes complete with crankpin, big-end bearing, small-end bearing, and washers
  • Drop in OEM fitment and installation
  • Precisely located oiling slots
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Pro X Connecting Rod Kit Reviews

Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
 
4.9 / 5.0
23 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
21
2
0
0
0
Value
5.0 / 5
Durability
5.0 / 5
Fitment
5.0 / 5
Performance
5.0 / 5
Recommend it?
Yes (15)
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Quality kit
For any KTM 2 stroke owner, this kit is a must for bottom end rebuild. Don't waste your money on OEM, these rods are better. If Andrew Cooksey uses them, they must be good.

And don't forget, the wrist pin is included, so don't order one when purchasing a top end.

-m-2009 KTM 200 XC-W--
March 2, 2019
Windber, PA, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
5'1 - 5'3
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Prox rod
Quality looking rod. Included the con rod, big and small end bearing, crank pin, and thrust washer. Seems like a good value.
February 4, 2019
Grand rapids, MI, US
Age: 25-44
Purchased
9 months ago
Gender:
Male
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Fantastic fit snd finish
Awesome product for the value!

-m-2017 KAWASAKI KX100--
Solid product great value!
Solid product great value!
January 21, 2019
Huntington beach, CA, US
Age: 45-64
Purchased
10 months ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
2004 Suzuki RM125 (worked like a champ)!
Pro-X parts are great, just got my 2004 Suzuki RM125 crank pressed (people are still around that do this).

It is working perfectly, I also used the Pro-X Main Bearings (as well) working great!

-m-2004 SUZUKI RM125--
October 1, 2018
74801, OK, US
Age: 45-64
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'7 - 5'9
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Always use pro x rods
I use pro x rod kits on all my rebuilds. Rocky Mountain atv is the best place to buy parts.
September 18, 2018
Elliott, IA, US
Purchased
1 year ago
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
High quality
Used as replacement for OEM part, works perfectly with no issues, must be good my engine builder won't let me buy junk!

-m-2011 YAMAHA YZ250--
September 2, 2018
Leadville, CO, US
Age: 45-64
Purchased
over 3 years ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great product
Fits great an I have used these for years an never had any trouble
December 22, 2017
Weeksbury, KY, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great part
I just purchased this rod kit and installed it. I have always had good luck with pro x parts. I’d highly recommend this item.

-m-2015 HUSQVARNA TC 125--
October 26, 2017
Park Hills , MO, US
Age: 25-44
Purchased
over 2 years ago
Gender:
Male
Weight:
161 - 190 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great product and fast !!! Shipping
Highly recommended ! Works great and perfect fit

-m-2005 HONDA CRF250X--
Cranked out !
Cranked out !
August 21, 2017
Clairmont , AB, CA
Age: 45-64
Purchased
over 2 years ago
Gender:
Male
Weight:
<100 lbs.
Height:
>6'7
Value
5 / 5
Durability
5 / 5
Fitment
5 / 5
Performance
5 / 5
Recommend it?
Yes
Mint
Easy install. Well built. Just true all together when assembly time!
April 8, 2017
Charlton, MA, US
Age: 15-24
Purchased
over 2 years ago
Gender:
Male
Weight:
101 - 130 lbs.
Height:
<5'0
Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 8 questions Browse 8 questions and 26 answers
does it fit on a stock crank?
A shopper on Dec 20, 2016
BEST ANSWER: The rod kit will replace your stock unit. You just need to have a press, v blocks and dial indicators to so the job. Or send it out to be done by a reputable builder.
Do you have to get the crank rebalanced after you put the new rod in?
A shopper on Nov 23, 2018
BEST ANSWER: A professional shop needs to press the crank unless you have the alignment tool to keep the two halves In their original place. It is always best to balance any crank after making changes but is not a must.
Hi there, on my KTM 250 xcw f the botton is a bronze ring. Is it the same in the kit, or a roller bearing ?
Ivonnick H on Apr 10, 2019
BEST ANSWER: The one I bought was for a 65cc it came with a roller bearing. I'm sure you will get whatever is correct for your bike.
This rod part for suzuki rmz 2012 250?
A shopper on Mar 12, 2018
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2012 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Where is this kit made at Pro-X Rod kit for 2004 Suzuki RM125?
Scott G on Jul 4, 2018
BEST ANSWER: Look up and see if it fits your machine. They make different sizes for different machines
No shipping to malaysia or singapore?
Muhamad ismail B on Sep 4, 2019
BEST ANSWER: Please email [email protected] with a list of part numbers you'd like to order and your full shipping address and they will be able to reply with a shipping quote for you.
Product details lists prox rod kit for ktm 300xc includes lower big end and upper small end rod bearings. Picture and video shows only lower rod bearing. does it come with the top end bearing?
victor on Jun 18, 2018
BEST ANSWER: This picture is generic and doesn't necessarily represent the actual product you will receive. The rod kit for your bike does include both bearings.
will this fit on wiseco crank?
Ryan B on Oct 26, 2016
BEST ANSWER: As long as it's an OEM replacement crank made to OEM specs, this will fit.
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