Minisport

Valves (all engines)

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Mini 998cc inlet valve- STANDARD SIZE (Radius collet) 1.095" - 12A1986

12A1986- Mini 998cc STD inlet valve (Radius collet) 1.095"

Mini 998cc STD inlet valve (Radius collet) 1.095"
$20.00
($15.53 USD †) In stock

Mini 998cc inlet valve- OVERSIZE SIZE (Radius collet) 1.156" - 12A1986#

12A1986#- Mini 998cc oversize inlet valve (Radius collet) 1.156"

Mini 998cc oversize inlet valve (Radius collet) 1.156"
$20.00
($15.53 USD †) In stock

Mini 998cc exhaust valve- STANDARD SIZE (Radius collet)- 1.000" - 12A1987

12A1987- Mini 998cc STD exhaust valve (Radius collet)- 1.000"

Mini 998cc STD exhaust valve (Radius collet)- 1.000"
$20.00
($15.53 USD †) In stock

Mini 1100cc Inlet Valve- 1.156" (wide collet) -SOLD SINGLE - AEA574

AEA574- Mini Inlet Valve- 1.156" (wide collet) -SOLD SINGLE

Mini Inlet Valve- 1.156" (wide collet)
$18.14
($14.08 USD †) In stock

Mini 998 Cooper Inlet valve- 1.216 (wide collet)- SOLD SINGLE - 12G296

12G296- Mini 998 Cooper Inlet valve- 1.216 (wide collet)- SOLD SINGLE

This is a 998 Cooper inlet valve, these can be used as a oversized 1100cc inlet valve (and a 998 one however do be aware they use the wide collets). 1.216"
$20.00
($15.53 USD †) In stock

Mini 850-1100cc Exhaust valve- 1.000" (wide collet) -SOLD SINGLE - AEA434

AEA434- EXHAUST VALVE 803-1100 (1.000")- Wide collet

Exhaust valve for small bore engine (1.000")- Wide collet

$16.32
($12.67 USD †) In stock

Mini 850-1100cc Exhaust valve- 1.062" (wide collet) -SOLD SINGLE - AEA434#

AEA434#- EXHAUST VALVE 803-1100 (1.062")- Wide collet

Oversize exhaust valve for small bore engine (1.062")- Wide collet

$16.32
($12.67 USD †) In stock

Mini 1275- Exhaust Valve - 1.156" (Mk2 S) - 12G1322

12G1322- 1275 Exhaust valve (1.156")

As fitted to Mk 2 S, this is a 1275 Exhaust valve

$22.68
($17.61 USD †) In stock

Mini 1275- Exhaust Valve - 1.220" (oversize) - 12G1322##

12G1322##- 1275 Exhaust valve (1.220")

1275 oversize Exhaust valve
$44.55
($34.58 USD †) In stock

Mini 1275- Inlet Valve- 1.315" (1275+MG MIDGET+1100S) - 12G941

12G941- 1275 inlet valve (1.315")

As fitted to 1100S/MG Midget, this is a 1275 Inlet valve

$18.14
($14.08 USD †) In stock

MINI 1275 INLET VALVE 1.402" LONG STEM RACE VALVE SINGLE COLLET - C-AEG544

C-AEG544- MINI 1275 INLET VALVE 35.7MM LONG STEM RACE VALVE SINGLE COLLET

1.402" (35.6mm) dia x 3.57" long intake valve. Our race valves are produced in EN214N steel and are stellite tipped and use the later narrow, single collet groove and current valve head shapes. They are plasma heat treated to eradicate wear from unleaded petrol and are suitable for our 12G1963 or C-AJJ4037 guides.
$45.41
($35.25 USD †) In stock

Mini 1275 inlet valve- triple groove race quality 35.7mm - C-AEG543

C-AEG543- VALVE INLET 35.7 TRIPLE GROOVE RACE QUALITY HEAT TREATED

These race valves are produced in EN214N steel and are stellite tipped and use the latest triple collet groove and current valve head shapes, plasma heat treated for eradicating unleaded petrol wear.

As it is possible, even common, to swap one head for another on 1275 engines, it is quite easy to become confused, or worse yet, confuse the parts-guy when it is time to order new valves. Be aware that if the head has been worked on previously, it may have oversize valves, it may have undersize if seats have been installed. Unless you are 100% sure what is in your cylinder head, it is a good idea to remove a valve for accurate measurement. There are two lengths used (nominally 3.52" & 3.57") three different keepers, (wide, narrow, and three-groove) theses are the 3 groove a plus type.

Note that 12G1316 (Smog-Type), all variations of the 12G940, and the latest CAM head castings all use the following 3.57" long valves
$36.32
($28.19 USD †) In stock

Mini 1275 RIMFLOW EXHAUST VALVE- 1.15"/29mm (Sold single) - C-RIM106

C-RIM106- Mini RIMFLOW EXHAUST VALVE 1.15"/29mm (Sold single)

Actually 29.3mm (1.15") these valves are in EN214N steel with chrome plated stems for use in standard iron guides. Easily noticeable by their strange design shape they claim to give better flow characteristics.
$53.64
($41.64 USD †) In stock

Mini 1275 RIMFLOW EXHAUST VALVE- 1.217"/31MM (Sold single) - C-RIM107

C-RIM107- Mini 1275 RIMFLOW EXHAUST VALVE- 1.217"/31MM (Sold single)

Actually 30.9mm (1.217") diameter exhaust valvethese valves are in EN214N steel with chrome plated stems for use in standard iron guides. Easily noticeable by their strange design shape they claim to give better flow characteristics. (use on 12G940 HEAD)
$53.64
($41.64 USD †) In stock

Mini 1275 RIMFLOW EXHAUST VALVE- 1.250"/32mm (Sold single) - C-RIM570

C-RIM570- VALVE RIMFLOW (1.250") 32MM EXHAUST

Suit 1275, The Ultimate in valves! Made in EN214N steel chrome plated for use with standard iron guides these valves are claimed to give better flow characteristics. 31.75mm (1.250") exhaust oversize valve
$53.64
($41.64 USD †) In stock