Delkron MFG LLC

Delkron MFG LLC Since 1974 to this day, Delkron has established itself as the best in Harley-Davidson performance.
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06/01/2026

Black 94 style (OEM #60662- 94) are ready to ship. PM with your email and address for an invoice. $890 + shipping. We still have a few castings left to make silver and 90-93 style if you need them. Takes about 1-2 weeks.

FXR primaries are rolling off the mill. We still have a few left so get one before they are gone. PM with your zip code ...
05/14/2026

FXR primaries are rolling off the mill. We still have a few left so get one before they are gone. PM with your zip code for an invoice. $850 natural, $890 black + shipping

😔This will be the last. Due to the cost of maintaining the patterns, we have decided to discontinue the FXR inner primar...
05/05/2026

😔This will be the last.
Due to the cost of maintaining the patterns, we have decided to discontinue the FXR inner primaries. We have about 50 casting left. If you would like to place an order, please send us a PM. $850 silver, $890 black + shipping

We are now taking preorders for FXR transmission cases, 1990–1994. They will be ready to ship by the end of Jun. PM with...
04/21/2026

We are now taking preorders for FXR transmission cases, 1990–1994. They will be ready to ship by the end of Jun. PM with name, address, black or natural, and with or without speedo pick-up hole for an invoice. Natural is $875, and black is $925 + shipping. We only have a limited supply, so order now.

04/14/2026

SOLD OUT!!
We have 1 black and 1 silver 94-up FXR primaries left in stock. PM for an invoice.

SOLD OUT! Will have more available by the end of May.We have a few FXR 1994-style primaries in stock, $845.00 + shipping...
03/31/2026

SOLD OUT! Will have more available by the end of May.
We have a few FXR 1994-style primaries in stock, $845.00 + shipping. PM if interested and we can send you an invoice

03/25/2026

Did you know that Delkron has a rebuild program? We do it all in house.

SOLD OUT!ORDER NOW and have it delivered this spring. 120 Long Block Engines are starting at $7,499.99Delkron’s 120” Squ...
03/25/2026

SOLD OUT!
ORDER NOW and have it delivered this spring. 120 Long Block Engines are starting at $7,499.99

Delkron’s 120” Square Block engine (4.250” bore with 4.250” stroke) will fit the stock Harley-Davidson®
Softail® (1999 & earlier) chassis as well as Harley-Davidson® DYNA™ (1998 & earlier), FXR, and FLT with no chassis modification.
Our 120” yielded a modest 124 HP* and 140 lbs.* of torque at the rear wheel.
Technical Specs
Bore = 4.250” X Stroke 4.250” = 120”cu
Compression = 10.5:1
Cam Lift .600
Castings = A356-T6 Aircraft
Rocker Arm Supports = 6061T6 Billet
Pistons = Wiseco Forged Racing Pistons
Rear Wheel Horsepower = 124*
Rear Wheel Torque = 140lbs*
* Average rating, exhaust and fuel delivery affect these numbers.

We get a lot of questions about what cylinders and piston combos we have in stock. As of right now, we have for Twin Cam...
03/25/2026

We get a lot of questions about what cylinders and piston combos we have in stock. As of right now, we have for Twin Cams:

4.125 x 4.000 = 107" $2,899.99

4.250 x 4.000 = 114" $2,999.99

3.937 x 4.375 = 107" $2,899.99

4.000 x 4.375 = 110" $2,999.99

4.125 x 4.375 = 117" $2,999.99

4.250 x 4.375 = 124" $3,099.99

4.125 x 4.625 = 124"* $3,099.99

4.250 x 4.625 = 131"* $3,099.99
* .125 Longer Cylinder
+$150.00 for black powder coat
2-week ship time on natural
3-week shipping time on black

M8 kits coming soon.

SOLD! A set of 4.250" Twin Cam cylinders ready to go. Makes a 114" on 4.000" stroke or a 124" on 4.375" stroke. Black hi...
03/19/2026

SOLD! A set of 4.250" Twin Cam cylinders ready to go. Makes a 114" on 4.000" stroke or a 124" on 4.375" stroke. Black highlights with no logo. Can add a logo for free. Have pistons in stock as well. ON SALE, one set only for $2,300.00 for just the cylinders or $2,800.00 with pistons kit and gaskets.

Address

3230 S 550 W
Shelbyville, IN
46176

Opening Hours

Tuesday 9am - 4pm
Wednesday 9am - 4pm
Thursday 9am - 4pm
Friday 9am - 4pm

Telephone

+13178207546

Website

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