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Cut-Off & Chainsaw Big Bore Kits

At HL Supply, we carry a wide variety of small engine big bore kits for chainsaws, cut off saws, and more. Browse our store to find aftermarket parts from the most popular brands including Stihl and Husqvarna. Our cut off and chainsaw big bore kits include cylinder, piston, rings, wrist pin, circlips, and brackets so you have everything you need to rebuild your big bore.

You will find big bore kits for chainsaws and cut-off saws from major manufacturers including Makita, Stihl, Dolmar and more. Please don’t hesitate to contact us at (386) 256-4891 or send us an email and speak to one of our small engine parts experts today.

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Hyway Stihl 044 MS440 big bore cylinder kit 52mm - 12mm pin + overhaul Hyway Stihl 046, MS460 big bore cylinder kit 54mm + overhaul kit Hyway Stihl 066, MS650, MS660 big bore + overhaul kit
List Price: $254.99
Our Price: $169.99
Sale Price: $144.99
Part #: H30440-B-DNS

(4)
List Price: $254.99
Our Price: $169.99
Sale Price: $144.99
Part #: H30460-B-DNS

(5)
List Price: $254.99
Our Price: $169.99
Sale Price: $144.99
Part #: H30660-B-DNS

(8)
Stihl chainsaw cylinder kit for Stihl 044 MS440 big bore overhaul kit 52mm Stihl chainsaw big bore kit for Stihl 046, MS460 overhaul 54mm Stihl chainsaw big bore kit for Stihl 066, MS650, MS660 overhaul
Hyway brand Stihl chainsaw cylinder kit
High quality Nikasil plated.
These Stihl chainsaw parts fit 044 MS440 chain saws.
Includes: cylinder kit, dual port muffler, decompression valve, spark plug, gasket set, oil seals
Replaces OEM part: 1128 020 1227 52mm bore *Older 044 chainsaws made before serial number X29 382 283 have a 10mm wrist pin. There are a few rare chainsaws that are after that serial number that also have a 10mm wrist pin. Please verify your pin size before ordering. Includes Free Accessories.
Hyway brand Stihl chainsaw big bore kit. 54mm bore.
High quality Nikasil plated. Has hole for decompression valve.
Fits: Stihl 046 chain saw, and Stihl MS460 chainsaw
Includes: Stihl chainsaw cylinder kit, dual port muffler, decompression valve, spark plug, gasket set, oil seals. Includes Free Accessories.
Hyway brand Stihl chainsaw big bore kit. 56mm bore.
High quality Nikasil plated.
Fits: Stihl 066, MS650, MS660 chainsaw.
Includes: Stihl chainsaw cylinder kit, dual port muffler, gasket set, oil seals, piston pin bearing, decompression valve, spark plug. Includes Free Accessories!
Replaces OEM part: 1122 020 1211
Husqvarna 395, 395XP Big bore cylinder kit 58mm Stihl MS361 big bore cylinder kit 49mm Hyway Stihl 066, MS650, MS660 big bore cylinder kit 56mm
List Price: $179.99
Our Price: $119.99
Part #: H30395-B

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List Price: $164.99
Our Price: $109.99
Part #: H30361-B
List Price: $194.99
Our Price: $129.99
Sale Price: $109.99
Part #: H30660-B
Husqvarna 395 395XP Big Bore cylinder and piston assembly Stihl MS361 big bore cylinder piston assembly 49mm Stihl 066 MS660 replacement chainsaw big bore kit assembly 56mm
Quality aftermarket big bore kit. 58mm bore
High quality Nikasil plated
Fits: Husqvarna 395, 395XP chainsaw May be used on 394 but you would need to convert it. Our product code H40394
Includes: cylinder, piston, rings, wrist pin, cir clips
Replaces OEM part: 503 99 39-71, 503 99 39-03
Quality aftermarket big bore kit. 49mm bore.
High quality Nikasil plated
Fits: Stihl MS361 chainsaw.
Includes: cylinder, piston, rings, wrist pin, cir clips.
Replaces OEM part: 1135 020 1202
High quality replacement Stihl Chainsaw big bore kit
Dolmar PS 7900, Makita DCS 6401, 6421 big bore cylinder kit 54mm Hyway Stihl 046, MS460 big bore cylinder kit 54mm Hyway Stihl 044, MS440 big bore cylinder kit 52mm - 12mm pin
List Price: $164.99
Our Price: $109.99
Part #: H30640-B

(6)
List Price: $164.99
Our Price: $109.99
Part #: H30460-B

(4)
List Price: $164.99
Our Price: $109.99
Part #: H30440-B

(2)
Dolmar PS 7900, Makita DCS 6401, 6421 big bore cylinder piston assembly 54mm Stihl 046 MS460 big bore cylinder piston assembly 54mm Stihl 044 MS440 big bore cylinder piston assembly 52mm
Quality aftermarket big bore kit. 54mm bore.
High quality Nikasil plated. Has hole for decompression valve
Fits: Dolmar PS 7900, Makita DCS 6401, 6421 chainsaw
Includes: cylinder, piston, rings, wrist pin, cir clips
Hyway brand big bore cylinder kit. 54mm bore.
High quality Nikasil plated. Has hole for decompression valve
Fits: Stihl 046, MS460 chainsaw
Includes: cylinder, piston, rings, wrist pin, cir clips
Replaces OEM part: 1128 020 1217
Hyway brand cylinder kit.
High quality Nikasil plated.
Includes: cylinder, piston, rings, wrist pin, cir clips
Fits: Stihl 044, MS440 chainsaw.
Replaces OEM part: 1128-020-1227
52mm bore with a 12mm pin.
*Older 044 chainsaws made before serial number X29 382 283 have a 10mm wrist pin. There are a few rare chainsaws that are after that serial number that also have a 10mm wrist pin. Please verify your pin size before ordering.
Hyway Husqvarna 371, 372 Big Bore cylinder kit 52mm Stihl MS441 Big Bore cylinder kit 52mm Husqvarna 340, 345, 346, 350, 353 big bore cylinder kit with gaskets
List Price: $164.99
Our Price: $109.99
Part #: H30372-B

(4)
List Price: $149.99
Our Price: $99.99
Part #: H30441-B
List Price: $146.99
Our Price: $97.99
Part #: H30353-DNS

(5)
Husqvarna 365 cylinder and piston assembly Stihl MS441 Big Bore Nikasil cylinder kit Husqvarna 340 345 346 350 353 big bore cylinder and piston assembly
Hyway brand big bore kit. 52mm bore.
High quality Nikasil plated.
Fits: Husqvarna 362, 365, 371, 372, XP chainsaws
Includes: cylinder, piston, rings, wrist pin, cir clips
Quality aftermarket big bore kit. 52mm bore.
High quality Nikasil plated.
Fits: Stihl MS441 chainsaw.
Includes: cylinder, piston, rings, wrist pin, cir clips
Replaces OEM part: 1138 020 1201
Quality aftermarket big bore kit. 45mm bore.
Fits: Husqvarna 340, 345, 346, 350, 353 chainsaw
Closed port cylinder with double ring piston
Includes: cylinder, piston, rings, wrist pin, cir clips, bottom bracket (for 340, 345)
With base, exhaust gasket, decompression valve, pin bearing, spark plug
Everything you need to upgrade you saw to 45mm
Hyway Stihl 026, MS260 Nikasil plated cylinder kit 44.7mm Husqvarna 340 345, 346, 350, 353 big bore cylinder kit Hyway Stihl 046, MS460 big bore cylinder kit 54mm-CLEARANCE
List Price: $164.99
Our Price: $109.99
Sale Price: $89.99
Part #: H30026-B

(3)
List Price: $131.99
Our Price: $87.99
Part #: H30340-B
List Price: $164.99
Our Price: $109.99
Sale Price: $39.99
Part #: H30460-B-CL
Stihl 026 MS260 big bore nikasil cylinder piston assembly 44.7mm Husqvarna 340 345 346 350 353 big bore cylinder and piston assembly Stihl 046 MS460 big bore cylinder piston assembly 54mm
Hyway brand cylinder kit.
High quality Nikasil plated - 44.7mm bore.
Fits: Stihl 026, MS260 chainsaw
Includes: cylinder, piston, rings, wrist pin, cir clips, decompression valve plug, threaded studs
Replaces OEM part: 1121-020-1203 or 1121-020-1217
Quality aftermarket big bore kit. 45mm bore.
Fits: Husqvarna 340 345, 346, 350, 353 chainsaw.
Closed port cylinder with double ring piston
Includes: cylinder, piston, rings, wrist pin, cir clips, bottom bracket (for 340, 345)
Everything you need to upgrade you saw to 45mm
Hyway brand big bore cylinder kit. 54mm bore.
High quality Nikasil plated. Has hole for decompression valve
Fits: Stihl 046, MS460 chainsaw
Includes: cylinder, piston, rings, wrist pin, cir clips
Replaces OEM part: 1128 020 1217

CLEARANCE ITEM
CUSTOMER RETURN
"SMALL KNICK" ON SIDE OF OUTER PISTON WALL, SEE PIC 4
(1) CIRCLIP INSTALLED ON PISTON
CLEARANCE ITEMS ARE SOLD AS IS
NO REFUNDS OR RETURNS
Hyway Stihl 066, MS650, MS660 big bore piston kit 56mm Slotted Nut With Insulator For Stihl MS361, 038
List Price: $44.99
Our Price: $29.99
Part #: H31660-B

Product price is not filled in. This product cannot be purchased.

Hyway Stihl 066, MS650, MS660 big bore piston kit
Hyway brand high quality Stihl chainsaw piston kit. 56mm.
Fits: Stihl 066, MS650, MS660 Big Bore cylinder
Includes: piston, rings, wrist pin, cir clips.
The above are the Non original parts suitable for:
Stihl MS341, MS361, 038, MS380
Please make sure it can fit on your machine before buying.
This replaces original part(s) #: 1121 084 7000, 1121 084 6901