Pistons & Rings

Original AE liner as used by BMC/Rover to restore worn or damaged block; fits cylinders in all 1275cc motors. Ref: AEG428, SU3598, AEG0428.

Set of piston rings for 5-ring 850cc pistons. Ref: R8577-STD, R8577-020, R8577-040, R8577-060.

Four-piston set of rings for four-ring 20950/20397/20398 pistons, as typically found in pre-A+ 998cc and 1098cc engines.

Piston ring set for one (1) individual piston; fits AE 21253 classic Mini Cooper S replacement piston or A+ 21962 piston. Ref: R41570, R41570-20, R41570-40, R41570-60, R41570-00.

Genuine AE piston ring set for one (1) 20659KR 73.5mm 1380cc piston. Ref: R39390 STD, R39390-00, 08-526600-00.

Set of three piston rings to fit one aftermarket 20950E flat top 998 piston. Ref: G1240B-1, G1240B-1/040.

Full piston ring set for 73.5mm 1380 Omega or C-STR311 pistons; top rings are 1.2mm.

Ring set for one 1380cc 73.5mm C-STR310 ''Mega'' piston; includes one (1) 1.2mm top ring and one (1) 1.5mm second ring.

Single piston ring set for 22463 A+ 998 3-ring pistons. Ref: R43240, 08-524300.

Genuine AE ring set for common AE 21251 and far less common AE 21250 pistons. Ref: R35960.

Piston rings for the standard 20754 and 20773 replacement pistons, as typically found in classic Mini 998cc A+ engines. Ref: R33636, R33636-00.

Economical 1275 pistons for road-spec engine rebuilds. Sold per set of 4. Ref: 21251, CP725, CP725K.

Set of four (4) 1275 pistons for high-performance applications; includes lightweight wrist pins and top-quality rings. Dish size 6.5cc.

Set of four (4) pistons for the Mini 850. Rings, pins and circlips included. Ref: 15037, CP301K.

3-ring flat-top pistons for use on A-series or A+ engines. Ref: 20950, CP398, ADU3490.

Lightweight die-cast piston for 1275cc A-series and A+ engines, featuring a 6.5cc offset dish. Ref: C-STN100, C-STN100-20, C-STN100-40, C-STN100-60.

AE dish-top 3-ring piston for road-spec 1275 engines. Equivalent to Spridget, Austin America and 1275GT piston. Ref: P21251, 21251.

High compression, OEM dish-top 3-ring 1275cc piston; ideal for classic Mini Cooper S-spec road engines. Ref: 21253, 21253 020, 21253 040, 21253 060, 21253 STD, P21253, P21253-20, P21253-40, P21253-60, P21253-00.

Purpose-made ''big-bore'' AE Hepolite pistons, ideal for adding displacement and torque to your A-series engine. Ref: 20659KR, P20659-00, 87-526600-00.

73.5mm ''big bore'' piston with 7cc dish. Manufactured in the UK in special double heat-treated aluminum, and features an anti-friction design, modern ring pack, and tapered wrist pin.

998 flat top piston, 3-ring, circlip type. Piston is marked 20528, Rover part number ADU3490. +.020 oversize, two only.

Genuine AE/Federal Mogul/Nural 998cc 3-ring flat-top pistons giving 10.3 compression.

AE 4-ring piston for road 998 applications; includes rings and pins. Ref: 20773, 20773-60.

Alloy Evolution piston with 9cc dish, the perfect start for a road-going high-torque classic Mini engine. Ref: C-STR311.

Set of 1275 +040 piston rings, made by JE. Ring sizes are 1.2mm. 1.5mm, and 3mm.